diff --git a/src/runner/instance.rs b/src/runner/instance.rs
index fa15058..d2e12bc 100644
--- a/src/runner/instance.rs
+++ b/src/runner/instance.rs
@@ -1,10 +1,26 @@
+use std::collections::HashMap;
+
 use mlua::IntoLua;
 use rbx_types::Ref;
 use rbx_dom_weak::{InstanceBuilder,WeakDom};
 
 use super::vector3::Vector3;
 
+/// A store of created functions for each Roblox class.
+/// Functions are created the first time they are accessed and stored in this data structure.
+#[derive(Default)]
+struct ClassFunctions<'a>{
+	classes:HashMap<&'a str,//ClassName
+		HashMap<&'a str,//Function name
+			mlua::Function<'a>
+		>
+	>
+}
+
 pub fn set_globals(lua:&mlua::Lua,globals:&mlua::Table<'_>)->Result<(),mlua::Error>{
+	//class functions store
+	lua.set_app_data(ClassFunctions::default());
+
 	let instance_table=lua.create_table()?;
 
 	//Instance.new
@@ -29,6 +45,10 @@ fn dom_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut WeakDom)->mlua::Result<T>)->m
 	let mut dom=lua.app_data_mut::<&'static mut WeakDom>().ok_or(mlua::Error::runtime("DataModel missing"))?;
 	f(&mut *dom)
 }
+fn class_functions_mut<T>(lua:&mlua::Lua,mut f:impl FnMut(&mut ClassFunctions<'_>)->mlua::Result<T>)->mlua::Result<T>{
+	let mut dom=lua.app_data_mut::<ClassFunctions<'static>>().ok_or(mlua::Error::runtime("ClassFunctions missing"))?;
+	f(&mut *dom)
+}
 
 fn coerce_float32(value:&mlua::Value)->Option<f32>{
 	match value{