diff --git a/src/class.lua b/src/class.lua
index a73ebcc..5eb737e 100644
--- a/src/class.lua
+++ b/src/class.lua
@@ -91,11 +91,22 @@ function module.init(shared)
 							item[index] = dset;
 						end
 					end
-					value.register(function (newValue,store)
+					local tween = value.tvalue;
+
+					-- adding event function
+					local function regFn(newValue,store)
 						if with then
 							newValue = with(newValue,item,store);
 						end
 						item[index] = newValue;
+					end
+					value.register(regFn);
+
+					-- this is using hacky of roblox instance
+					-- this is will keep reference from week table until
+					-- inscance got GCed
+					item:GetPropertyChangedSignal("ClassName"):Connect(function ()
+						return regFn;
 					end);
 				elseif (valueType == "function" or valueType == "table") and bind(item,index,value,valueType) then -- connect event
 					-- event binding
@@ -275,4 +286,4 @@ function module.init(shared)
 	return new;
 end
 
-return module;
\ No newline at end of file
+return module;
diff --git a/src/store.lua b/src/store.lua
index 22c5fbe..1d845cd 100644
--- a/src/store.lua
+++ b/src/store.lua
@@ -16,6 +16,7 @@ local function catch(...)
 	end
 end
 
+local week = {__mode = "vk"};
 function module.init(shared)
 	local new = {};
 	local items = shared.items;
@@ -92,7 +93,7 @@ function module.init(shared)
 		self.__self[key] = value;
 		local event = self.__evt[key];
 		if event then
-			for _,v in ipairs(event) do
+			for _,v in pairs(event) do -- NO ipairs here
 				wrap(catch)(v,value,store);
 			end
 		end
@@ -112,6 +113,9 @@ function module.init(shared)
 				default = function (s,value)
 					return setmetatable({dvalue = value},{__index = s});
 				end;
+				tween = function (s,value)
+					return setmetatable({tvalue = value},{__index = s});
+				end;
 				key = key;
 				store = self;
 				t = "reg";
@@ -126,7 +130,7 @@ function module.init(shared)
 	end
 	function new.new(self)
 		return setmetatable(
-			{__self = self or {},__evt = {},__reg = {}},store
+			{__self = self or {},__evt = setmetatable({},week),__reg = setmetatable({},week)},store
 		);
 	end