diff --git a/mers/Cargo.toml b/mers/Cargo.toml
index 3c30102..f0984db 100644
--- a/mers/Cargo.toml
+++ b/mers/Cargo.toml
@@ -15,7 +15,7 @@ default = ["colored-output"]
 colored-output = ["mers_lib/ecolor-term", "mers_lib/pretty-print", "dep:colored"]
 
 [dependencies]
-mers_lib = "0.9.10"
+mers_lib = "0.9.12"
 # mers_lib = { path = "../mers_lib" }
 clap = { version = "4.3.19", features = ["derive"] }
 colored = { version = "2.1.0", optional = true }
diff --git a/mers_lib/Cargo.toml b/mers_lib/Cargo.toml
index ece12c9..87cd981 100755
--- a/mers_lib/Cargo.toml
+++ b/mers_lib/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mers_lib"
-version = "0.9.12"
+version = "0.9.13"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "library to use the mers language in other projects"
diff --git a/mers_lib/examples/01_user_scripts.rs b/mers_lib/examples/01_user_scripts.rs
index f06de81..2f4352e 100644
--- a/mers_lib/examples/01_user_scripts.rs
+++ b/mers_lib/examples/01_user_scripts.rs
@@ -8,7 +8,7 @@ use mers_lib::{
 };
 
 fn main() -> Result<(), CheckError> {
-    let (_, func) = parse_compile_check_run(
+    let (_, func, info) = parse_compile_check_run(
         // The `[(String -> String)]` type annotation ensures that decorate.mers returns a `String -> String` function.
         "[(String -> String)] #include \"examples/decorate.mers\"".to_owned(),
     )?;
@@ -23,7 +23,10 @@ fn main() -> Result<(), CheckError> {
 
     // use the function to decorate these 3 test strings
     for input in ["my test string", "Main Menu", "O.o"] {
-        let result = func.run_immut(Data::new(data::string::String(input.to_owned())))?;
+        let result = func.run_immut(
+            Data::new(data::string::String(input.to_owned())),
+            info.global.clone(),
+        )?;
         let result = result.get();
         let result = &result
             .as_any()
@@ -37,7 +40,9 @@ fn main() -> Result<(), CheckError> {
 }
 
 /// example 00
-fn parse_compile_check_run(src: String) -> Result<(Type, Data), CheckError> {
+fn parse_compile_check_run(
+    src: String,
+) -> Result<(Type, Data, mers_lib::program::run::Info), CheckError> {
     let mut source = Source::new_from_string(src);
     let srca = Arc::new(source.clone());
     let parsed = parse(&mut source, &srca)?;
@@ -45,5 +50,5 @@ fn parse_compile_check_run(src: String) -> Result<(Type, Data), CheckError> {
     let compiled = parsed.compile(&mut i1, CompInfo::default())?;
     let output_type = compiled.check(&mut i3, None)?;
     let output_value = compiled.run(&mut i2)?;
-    Ok((output_type, output_value))
+    Ok((output_type, output_value, i2))
 }
diff --git a/mers_lib/src/data/function.rs b/mers_lib/src/data/function.rs
index b5621f5..882ca1a 100755
--- a/mers_lib/src/data/function.rs
+++ b/mers_lib/src/data/function.rs
@@ -80,11 +80,25 @@ impl Function {
     pub fn check(&self, arg: &Type) -> Result<Type, CheckError> {
         self.get_as_type().o(arg)
     }
-    pub fn run_mut(&mut self, arg: Data) -> Result<Data, CheckError> {
+    pub fn run_mut(
+        &mut self,
+        arg: Data,
+        gi: crate::program::run::RunLocalGlobalInfo,
+    ) -> Result<Data, CheckError> {
+        self.info.global = gi;
+        self.run_mut_with_prev_gi(arg)
+    }
+    pub fn run_mut_with_prev_gi(&mut self, arg: Data) -> Result<Data, CheckError> {
         (self.run)(arg, &mut self.info)
     }
-    pub fn run_immut(&self, arg: Data) -> Result<Data, CheckError> {
-        (self.run)(arg, &mut self.info.duplicate())
+    pub fn run_immut(
+        &self,
+        arg: Data,
+        gi: crate::program::run::RunLocalGlobalInfo,
+    ) -> Result<Data, CheckError> {
+        let mut i = self.info.duplicate();
+        i.global = gi;
+        (self.run)(arg, &mut i)
     }
     pub fn get_as_type(&self) -> FunctionT {
         let info = self.info_check.lock().unwrap().clone();
@@ -114,13 +128,25 @@ impl MersData for Function {
     fn executable(&self) -> Option<crate::data::function::FunctionT> {
         Some(self.get_as_type())
     }
-    fn execute(&self, arg: Data) -> Option<Result<Data, CheckError>> {
-        Some(self.run_immut(arg))
+    fn execute(
+        &self,
+        arg: Data,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Result<Data, CheckError>> {
+        Some(self.run_immut(arg, gi.clone()))
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    fn iterable(
+        &self,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
         let mut s = Clone::clone(self);
+        let mut gi = Some(gi.clone());
         Some(Box::new(std::iter::from_fn(move || {
-            match s.run_mut(Data::empty_tuple()) {
+            match if let Some(gi) = gi.take() {
+                s.run_mut(Data::empty_tuple(), gi)
+            } else {
+                s.run_mut_with_prev_gi(Data::empty_tuple())
+            } {
                 Err(e) => Some(Err(e)),
                 Ok(v) => {
                     if let Some(v) = v.one_tuple_content() {
diff --git a/mers_lib/src/data/mod.rs b/mers_lib/src/data/mod.rs
index 7757e40..9420e32 100755
--- a/mers_lib/src/data/mod.rs
+++ b/mers_lib/src/data/mod.rs
@@ -30,16 +30,28 @@ pub trait MersData: Any + Debug + Send + Sync {
         None
     }
     #[allow(unused_variables)]
-    fn execute(&self, arg: Data) -> Option<Result<Data, CheckError>> {
+    fn execute(
+        &self,
+        arg: Data,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Result<Data, CheckError>> {
         None
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    #[allow(unused_variables)]
+    fn iterable(
+        &self,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
         None
     }
     /// By default, uses `iterable` to get an iterator and `nth` to retrieve the nth element.
     /// Should have a custom implementation for better performance on most types
-    fn get(&self, i: usize) -> Option<Result<Data, CheckError>> {
-        self.iterable()?.nth(i)
+    fn get(
+        &self,
+        i: usize,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Result<Data, CheckError>> {
+        self.iterable(gi)?.nth(i)
     }
     /// If self and other are different types (`other.as_any().downcast_ref::<Self>().is_none()`),
     /// this *must* return false.
diff --git a/mers_lib/src/data/reference.rs b/mers_lib/src/data/reference.rs
index 6d554b8..d56553a 100755
--- a/mers_lib/src/data/reference.rs
+++ b/mers_lib/src/data/reference.rs
@@ -27,7 +27,11 @@ impl MersData for Reference {
             None
         }
     }
-    fn execute(&self, arg: Data) -> Option<Result<Data, CheckError>> {
+    fn execute(
+        &self,
+        arg: Data,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Result<Data, CheckError>> {
         let mut inner = self.0.write().unwrap();
         let mut inner = inner.get_mut();
         if let Some(func) = inner
@@ -35,13 +39,17 @@ impl MersData for Reference {
             .mut_any()
             .downcast_mut::<crate::data::function::Function>()
         {
-            Some(func.run_mut(arg))
+            Some(func.run_mut(arg, gi.clone()))
         } else {
             None
         }
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    fn iterable(
+        &self,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
         let inner = Arc::clone(&self.0);
+        let gi = gi.clone();
         Some(Box::new(std::iter::from_fn(move || {
             match inner
                 .write()
@@ -50,7 +58,7 @@ impl MersData for Reference {
                 .mut_any()
                 .downcast_mut::<crate::data::function::Function>()
                 .unwrap()
-                .run_mut(Data::empty_tuple())
+                .run_mut(Data::empty_tuple(), gi.clone())
             {
                 Err(e) => Some(Err(e)),
                 Ok(v) => {
diff --git a/mers_lib/src/data/tuple.rs b/mers_lib/src/data/tuple.rs
index 348dd9b..cf70749 100755
--- a/mers_lib/src/data/tuple.rs
+++ b/mers_lib/src/data/tuple.rs
@@ -35,7 +35,10 @@ impl MersData for Tuple {
             false
         }
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    fn iterable(
+        &self,
+        _gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
         Some(Box::new(self.0.clone().into_iter().map(Ok)))
     }
     fn clone(&self) -> Box<dyn MersData> {
diff --git a/mers_lib/src/program/configs/with_base.rs b/mers_lib/src/program/configs/with_base.rs
index 8573f22..29b13e4 100755
--- a/mers_lib/src/program/configs/with_base.rs
+++ b/mers_lib/src/program/configs/with_base.rs
@@ -63,14 +63,14 @@ impl Config {
                     }
                     Ok(Type::empty_tuple())
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
                     let a = a.get();
                     let a = a.as_any().downcast_ref::<data::tuple::Tuple>().unwrap();
                     let arg_ref = a.0[0].get();
                     let arg_ref = arg_ref.as_any().downcast_ref::<data::reference::Reference>().unwrap();
                     let mut arg = arg_ref.0.write().unwrap();
                     let func = a.0[1].get();
-                    *arg = func.execute(arg.clone()).unwrap()?;
+                    *arg = func.execute(arg.clone(), &i.global).unwrap()?;
                     Ok(Data::empty_tuple())
                 }),
                 inner_statements: None,
@@ -103,12 +103,12 @@ impl Config {
                     }
                     Ok(Type::new(data::int::IntT(0, INT_MAX)))
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
                     Ok(Data::new(data::int::Int(if let Some(t) = a.get().as_any().downcast_ref::<data::tuple::Tuple>() {
                         t.0.len().try_into().unwrap_or(INT_MAX)
                     } else if let Some(s) = a.get().as_any().downcast_ref::<data::string::String>() {
                         s.0.len().try_into().unwrap_or(INT_MAX)
-                    } else if let Some(i) = a.get().iterable() {
+                    } else if let Some(i) = a.get().iterable(&i.global) {
                         i.count().try_into().unwrap_or(INT_MAX)
                     } else {
                         return Err("called len on {a:?}, which isn't a tuple, a string, or something iterable.".into());
@@ -130,8 +130,8 @@ impl Config {
                     }
                         Ok(bool_type())
                     })),
-                run: Arc::new(|a, _i| {
-                    Ok(Data::new(data::bool::Bool(if let Some(mut i) = a.get().iterable() {
+                run: Arc::new(|a, i| {
+                    Ok(Data::new(data::bool::Bool(if let Some(mut i) = a.get().iterable(&i.global) {
                         if let Some(f) = i.next() {
                             let f = f?;
                             let mut o = true;
diff --git a/mers_lib/src/program/configs/with_command_running.rs b/mers_lib/src/program/configs/with_command_running.rs
index f779582..b6ffae4 100755
--- a/mers_lib/src/program/configs/with_command_running.rs
+++ b/mers_lib/src/program/configs/with_command_running.rs
@@ -12,7 +12,6 @@ use crate::{
         object::ObjectFieldsMap,
         Data, MersData, MersDataWInfo, MersType, Type,
     },
-    errors::CheckError,
     info::DisplayInfo,
     program::{self, run::CheckInfo},
 };
@@ -56,7 +55,7 @@ impl Config {
                     let cmd = cmd.get();
                     let (cmd, args) = (
                         cmd.as_any().downcast_ref::<data::string::String>().unwrap(),
-                        args.get().iterable().unwrap(),
+                        args.get().iterable(&i.global).unwrap(),
                     );
                     let args = args.map(|v| v.map(|v| v.get().with_info(i).to_string())).collect::<Result<Vec<_>, _>>()?;
                     match Command::new(&cmd.0)
@@ -107,7 +106,7 @@ impl Config {
                     let cmd = cmd.get();
                     let (cmd, args) = (
                         cmd.as_any().downcast_ref::<data::string::String>().unwrap(),
-                        args.get().iterable().unwrap(),
+                        args.get().iterable(&i.global).unwrap(),
                     );
                     let args = args.map(|v| v.map(|v| v.get().with_info(i).to_string())).collect::<Result<Vec<_>, _>>()?;
                     match Command::new(&cmd.0)
@@ -203,14 +202,14 @@ impl Config {
                         return Err(format!("childproc_write_bytes called on non-`(ChildProcess, Iter<Byte>)` type {}", a.with_info(i)).into());
                     }
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
                     let a = a.get();
                     let tuple = a.as_any().downcast_ref::<data::tuple::Tuple>().unwrap();
                     let child = tuple.0[0].get();
                     let bytes = tuple.0[1].get();
                     let child = child.as_any().downcast_ref::<ChildProcess>().unwrap();
                     let mut child = child.0.lock().unwrap();
-                    let buf = bytes.iterable().unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::byte::Byte>().unwrap().0)).collect::<Result<Vec<_>, _>>()?;
+                    let buf = bytes.iterable(&i.global).unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::byte::Byte>().unwrap().0)).collect::<Result<Vec<_>, _>>()?;
                     Ok(if child.1.as_mut().is_some_and(|v| v.write_all(&buf).is_ok() && v.flush().is_ok()) {
                         Data::new(data::bool::Bool(true))
                     } else {
@@ -385,12 +384,6 @@ impl MersData for ChildProcess {
     fn display(&self, _info: &DisplayInfo<'_>, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         write!(f, "{self}")
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
-        None
-    }
-    fn get(&self, _i: usize) -> Option<Result<Data, CheckError>> {
-        None
-    }
     fn is_eq(&self, other: &dyn MersData) -> bool {
         other
             .as_any()
diff --git a/mers_lib/src/program/configs/with_get.rs b/mers_lib/src/program/configs/with_get.rs
index d091ce3..50624c0 100755
--- a/mers_lib/src/program/configs/with_get.rs
+++ b/mers_lib/src/program/configs/with_get.rs
@@ -50,14 +50,14 @@ impl Config {
                         Arc::new(data::tuple::TupleT(vec![])),
                     ]))
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
                     let a = a.get();
-                    if let (Some(v), Some(i)) = (a.get(0), a.get(1)) {
-                        let (v, i2) = (v?, i?);
-                        let o = if let Some(i3) = i2.get().as_any().downcast_ref::<data::int::Int>()
+                    if let (Some(v), Some(x)) = (a.get(0, &i.global), a.get(1, &i.global)) {
+                        let (v, x2) = (v?, x?);
+                        let o = if let Some(x3) = x2.get().as_any().downcast_ref::<data::int::Int>()
                         {
-                            if let Ok(i) = i3.0.try_into() {
-                                if let Some(v) = v.get().get(i) {
+                            if let Ok(x) = x3.0.try_into() {
+                                if let Some(v) = v.get().get(x, &i.global) {
                                     Ok(Data::one_tuple(v?))
                                 } else {
                                     Ok(Data::empty_tuple())
diff --git a/mers_lib/src/program/configs/with_iters.rs b/mers_lib/src/program/configs/with_iters.rs
index 895ecdf..565c7b2 100755
--- a/mers_lib/src/program/configs/with_iters.rs
+++ b/mers_lib/src/program/configs/with_iters.rs
@@ -30,16 +30,16 @@ impl Config {
     /// `all: fn` returns true if all elements of the iterator are true
     pub fn with_iters(self) -> Self {
         self
-            .add_var("any", genfunc_iter_in_val_out("all".to_string(), data::bool::bool_type(), data::bool::bool_type(), |a, _i| {
-                for v in a.get().iterable().unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::bool::Bool>().is_some_and(|v| v.0))) {
+            .add_var("any", genfunc_iter_in_val_out("all".to_string(), data::bool::bool_type(), data::bool::bool_type(), |a, i| {
+                for v in a.get().iterable(&i.global).unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::bool::Bool>().is_some_and(|v| v.0))) {
                     if v? {
                         return Ok(Data::new(data::bool::Bool(true)));
                     }
                 }
                 Ok(Data::new(data::bool::Bool(false)))
             }))
-            .add_var("all", genfunc_iter_in_val_out("all".to_string(), data::bool::bool_type(), data::bool::bool_type(), |a, _i| {
-                for v in a.get().iterable().unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::bool::Bool>().is_some_and(|v| v.0))) {
+            .add_var("all", genfunc_iter_in_val_out("all".to_string(), data::bool::bool_type(), data::bool::bool_type(), |a, i| {
+                for v in a.get().iterable(&i.global).unwrap().map(|v| v.map(|v| v.get().as_any().downcast_ref::<data::bool::Bool>().is_some_and(|v| v.0))) {
                     if !v? {
                         return Ok(Data::new(data::bool::Bool(false)));
                     }
@@ -88,13 +88,13 @@ impl Config {
                     }
                     Ok(Type::empty_tuple())
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
                     if let Some(tuple) = a.get().as_any().downcast_ref::<data::tuple::Tuple>() {
                         if let (Some(v), Some(f)) = (tuple.get(0), tuple.get(1)) {
-                            if let Some(iter) = v.get().iterable() {
+                            if let Some(iter) = v.get().iterable(&i.global) {
                                 let f = f.get();
                                 for v in iter {
-                                    f.execute(v?).unwrap()?;
+                                    f.execute(v?, &i.global).unwrap()?;
                                 }
                                 Ok(Data::empty_tuple())
                             } else {
@@ -319,21 +319,25 @@ impl MersData for Iter {
     fn is_eq(&self, _other: &dyn MersData) -> bool {
         false
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    fn iterable(
+        &self,
+        gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+        let gi = gi.clone();
         Some(match &self.0 {
             Iters::Map(f) => {
                 let f = Clone::clone(f);
-                Box::new(self.1.get().iterable()?.map(move |v| {
+                Box::new(self.1.get().iterable(&gi)?.map(move |v| {
                     f.get()
-                        .execute(v?)
+                        .execute(v?, &gi)
                         .ok_or_else(|| CheckError::from("called map with non-function argument"))?
                 }))
             }
             Iters::Filter(f) => {
                 let f = Clone::clone(f);
-                Box::new(self.1.get().iterable()?.filter_map(move |v| {
+                Box::new(self.1.get().iterable(&gi)?.filter_map(move |v| {
                     match v {
-                        Ok(v) => match f.get().execute(v.clone()) {
+                        Ok(v) => match f.get().execute(v.clone(), &gi) {
                             Some(Ok(f)) => {
                                 if f.get()
                                     .as_any()
@@ -356,8 +360,8 @@ impl MersData for Iter {
             }
             Iters::FilterMap(f) => {
                 let f = Clone::clone(f);
-                Box::new(self.1.get().iterable()?.filter_map(move |v| match v {
-                    Ok(v) => match f.get().execute(v) {
+                Box::new(self.1.get().iterable(&gi)?.filter_map(move |v| match v {
+                    Ok(v) => match f.get().execute(v, &gi) {
                         Some(Ok(r)) => Some(Ok(r.one_tuple_content()?)),
                         Some(Err(e)) => Some(Err(e)),
                         None => Some(Err(CheckError::from(
@@ -369,8 +373,8 @@ impl MersData for Iter {
             }
             Iters::MapWhile(f) => {
                 let f = Clone::clone(f);
-                Box::new(self.1.get().iterable()?.map_while(move |v| match v {
-                    Ok(v) => match f.get().execute(v) {
+                Box::new(self.1.get().iterable(&gi)?.map_while(move |v| match v {
+                    Ok(v) => match f.get().execute(v, &gi) {
                         Some(Ok(r)) => Some(Ok(r.one_tuple_content()?)),
                         Some(Err(e)) => Some(Err(e)),
                         None => Some(Err(CheckError::from(
@@ -380,22 +384,28 @@ impl MersData for Iter {
                     Err(e) => Some(Err(e)),
                 }))
             }
-            Iters::Take(limit) => Box::new(self.1.get().iterable()?.take(*limit)),
+            Iters::Take(limit) => Box::new(self.1.get().iterable(&gi)?.take(*limit)),
             Iters::Enumerate => {
-                Box::new(self.1.get().iterable()?.enumerate().map(|(i, v)| match v {
-                    Ok(v) => Ok(Data::new(data::tuple::Tuple(vec![
-                        Data::new(data::int::Int(i as _)),
-                        v,
-                    ]))),
-                    Err(e) => Err(e),
-                }))
+                Box::new(
+                    self.1
+                        .get()
+                        .iterable(&gi)?
+                        .enumerate()
+                        .map(|(i, v)| match v {
+                            Ok(v) => Ok(Data::new(data::tuple::Tuple(vec![
+                                Data::new(data::int::Int(i as _)),
+                                v,
+                            ]))),
+                            Err(e) => Err(e),
+                        }),
+                )
             }
             Iters::Chained => {
                 match self
                     .1
                     .get()
-                    .iterable()?
-                    .map(|v| Ok(v?.get().iterable()))
+                    .iterable(&gi)?
+                    .map(move |v| Ok(v?.get().iterable(&gi)))
                     .collect::<Result<Option<Vec<_>>, CheckError>>()
                 {
                     Ok(Some(iters)) => Box::new(iters.into_iter().flatten()),
diff --git a/mers_lib/src/program/configs/with_list.rs b/mers_lib/src/program/configs/with_list.rs
index 57819a8..3bae9d8 100755
--- a/mers_lib/src/program/configs/with_list.rs
+++ b/mers_lib/src/program/configs/with_list.rs
@@ -221,9 +221,9 @@ impl Config {
                             ).into())
                         }
                     })),
-                    run: Arc::new(|a, _i| {
-                        if let Some(i) = a.get().iterable() {
-                            Ok(Data::new(List(i.map(|v| Ok::<_, CheckError>(Arc::new(RwLock::new(v?)))).collect::<Result<_, _>>()?)))
+                    run: Arc::new(|a, i| {
+                        if let Some(iter) = a.get().iterable(&i.global) {
+                            Ok(Data::new(List(iter.map(|v| Ok::<_, CheckError>(Arc::new(RwLock::new(v?)))).collect::<Result<_, _>>()?)))
                         } else {
                             Err("as_list called on non-iterable".into())
                         }
@@ -272,7 +272,10 @@ impl MersData for List {
             false
         }
     }
-    fn iterable(&self) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
+    fn iterable(
+        &self,
+        _gi: &crate::program::run::RunLocalGlobalInfo,
+    ) -> Option<Box<dyn Iterator<Item = Result<Data, CheckError>>>> {
         Some(Box::new(
             self.0
                 .clone()
diff --git a/mers_lib/src/program/configs/with_math.rs b/mers_lib/src/program/configs/with_math.rs
index 700d7f6..7ec8fae 100755
--- a/mers_lib/src/program/configs/with_math.rs
+++ b/mers_lib/src/program/configs/with_math.rs
@@ -501,10 +501,10 @@ impl Config {
                     }
                     Ok(o)
                 },
-                |a, _| {
+                |a, i| {
                     let mut min_int = None;
                     let mut min_float = None;
-                    for a in a.get().iterable().expect("called `min` on non-itereable") {
+                    for a in a.get().iterable(&i.global).expect("called `min` on non-itereable") {
                         let a = a?;
                         let a = a.get();
                         let a = a.as_any().downcast_ref::<data::int::Int>().map(|v| Ok(v.0)).or_else(|| a.as_any().downcast_ref::<data::float::Float>().map(|v| Err(v.0))).expect("found non-Int/Float element in argument to `min`");
@@ -581,10 +581,10 @@ impl Config {
                     }
                     Ok(o)
                 },
-                |a, _| {
+                |a, i| {
                     let mut min_int = None;
                     let mut min_float = None;
-                    for a in a.get().iterable().expect("called `min` on non-itereable") {
+                    for a in a.get().iterable(&i.global).expect("called `min` on non-itereable") {
                         let a = a?;
                         let a = a.get();
                         let a = a.as_any().downcast_ref::<data::int::Int>().map(|v| Ok(v.0)).or_else(|| a.as_any().downcast_ref::<data::float::Float>().map(|v| Err(v.0))).expect("found non-Int/Float element in argument to `min`");
@@ -796,7 +796,7 @@ fn func_math_op(
             }
             Ok(o)
         },
-        move |a, _| {
+        move |a, i| {
             let a = a.get();
             Ok(
                 if let Some(a) = &a
@@ -839,7 +839,7 @@ fn func_math_op(
                     let (mut acc, _) = iter_version
                         .expect("no iter version for this math op, but argument not a 2-tuple...");
                     for a in a
-                        .iterable()
+                        .iterable(&i.global)
                         .expect("math op with iter version called on non-iterable")
                     {
                         let a = a?;
diff --git a/mers_lib/src/program/configs/with_multithreading.rs b/mers_lib/src/program/configs/with_multithreading.rs
index ef45270..6c13a51 100755
--- a/mers_lib/src/program/configs/with_multithreading.rs
+++ b/mers_lib/src/program/configs/with_multithreading.rs
@@ -47,9 +47,10 @@ impl Config {
                     }
                     Ok(Type::new(ThreadT(out)))
                 })),
-                run: Arc::new(|a, _i| {
+                run: Arc::new(|a, i| {
+                    let gi = i.global.clone();
                     Ok(Data::new(Thread(Arc::new(Mutex::new(Ok(std::thread::spawn(
-                        move || a.get().execute(Data::empty_tuple()).unwrap(),
+                        move || a.get().execute(Data::empty_tuple(), &gi).unwrap(),
                     )))))))
                 }),
                 inner_statements: None,
diff --git a/mers_lib/src/program/configs/with_string.rs b/mers_lib/src/program/configs/with_string.rs
index b236df9..cf41878 100755
--- a/mers_lib/src/program/configs/with_string.rs
+++ b/mers_lib/src/program/configs/with_string.rs
@@ -81,7 +81,7 @@ impl Config {
                     |a, i| {
                         Ok(Data::new(data::string::String(
                             a.get()
-                                .iterable()
+                                .iterable(&i.global)
                                 .unwrap()
                                 .map(|v| v.map(|v| v.get().with_info(i).to_string()))
                                 .collect::<Result<_, _>>()?,
diff --git a/mers_lib/src/program/run/chain.rs b/mers_lib/src/program/run/chain.rs
index fbd18b6..7ebf745 100755
--- a/mers_lib/src/program/run/chain.rs
+++ b/mers_lib/src/program/run/chain.rs
@@ -92,7 +92,7 @@ impl MersStatement for Chain {
         let f = self.first.run(info)?;
         let c = self.chained.run(info)?;
         let c = c.get();
-        match c.execute(f) {
+        match c.execute(f, &info.global) {
             Some(Ok(v)) => Ok(v),
             Some(Err(e)) => Err(if let Some(_) = &self.as_part_of_include {
                 CheckError::new().err_with_diff_src(e).src(vec![(
diff --git a/mers_lib/src/program/run/try.rs b/mers_lib/src/program/run/try.rs
index 26a932a..8cc8202 100644
--- a/mers_lib/src/program/run/try.rs
+++ b/mers_lib/src/program/run/try.rs
@@ -116,7 +116,7 @@ impl MersStatement for Try {
             match func.executable().map(|func| func.o(&arg_type)) {
                 Some(Ok(_)) => {
                     drop(ar);
-                    return func.execute(arg).unwrap();
+                    return func.execute(arg, &info.global).unwrap();
                 }
                 None | Some(Err(_)) => (),
             }