Adding/Subtracting Difference between IntValue Changes

[pro_rebel502]

I know this topic has been brought up before and Ive seen the basic solutions, but i need advice on how to handle this issue on a larger level.

This script is for my inventory syste, it detects when the value in the players “inventory” folder changes. That all works. However I have a section that creates a notification for when the value of an item goes up, like you get “+1 wheat” or “-2 Corn” etc.

The problem I have with this current code is that it starts with the initial value of 0 then goes up by whatever number for whatever vlue, say Corn goes up by one. Then when I get another corn it follows the math. However if I get 2 corn, then go get a potato, the value which will start at 0, it does the math between having 2 corn, and then getting +1 potato.

Idk if that explains it well, but thats the issue. Ive never done stuff like this with int values before.

for i,v in pairs(ItemsInInventory) do
		FirstVal = v.Value
		v.Changed:Connect(function()
			if v.Value > FirstVal then
				local Notification = game.ReplicatedStorage.UIStorage.Notification:Clone()
				Notification.Parent = script.Parent.Parent.PlayerMenu.InventoryNotification
				Notification.Script.Enabled = true
				Notification.TextLabel.Text = ("+"..(v.Value - FirstVal).." "..v.Name)
			else
				local Notification = game.ReplicatedStorage.UIStorage.Notification:Clone()
				Notification.Parent = script.Parent.Parent.PlayerMenu.InventoryNotification
				Notification.Script.Enabled = true
				Notification.TextLabel.Text = ("-"..(v.Value - FirstVal).." "..v.Name)
			end
			FirstVal = v.Value
			
			
		end)
				
	end

I hope I explained it well, im happy to go into more detail if it helps.

Also im sorry if the answer is glaringly obvious and im not seeing it lol

[Chark_Proto (Chark)]

@pro_rebel502

FirstVal = v.Value

1. Put this topic in Help and Feedback > Scripting Support, not creations feedback.
2. Replace that with local FirstVal = v.Value and remove references to FirstVal outside of the loop. You’re using a global variable for that, so any changes to it made by any item will overwrite other values.

[pro_rebel502]

oops lol. Thanks. And thanks for the edit, that worked perfectly!