how do i change the imgid on a imagelabel?

so for the past half hour iv been trying to change the imgid on a imagelabel but it changes the imgid when it sets it and nothing shows up. i can change it manualy and it shows it but wheni try to do it through a script it changes the image id and doesent work. ill leave my script below to see if im doing it wrong or something.

line 23-28 is where im trying to change it

--vars go here
local playerinvs = game.ReplicatedStorage.PlayerInvs

local playerinv = game.ReplicatedStorage.PlayerInvs


--find out when the player joins..
game.Players.PlayerAdded:Connect(function(p)
	
	local playerinvfolder = Instance.new("Folder")
	playerinvfolder.Name = p.Name.."sInv"
	playerinvfolder.Parent = playerinv
	
	for i=1, 9 do
		local a = Instance.new("Folder",playerinvfolder)
		a.Name = "Slot"..i
		local b = Instance.new("BoolValue",a)
		b.Name = "IsFull"
		b.Value = false
		a.ChildAdded:Connect(function(item)  -- surprised this works but this will tell me when somone picks up something
			 -- saved me about 20 lines of code right here
			wait(0.5)
			local nameid = a.ItemName.Value
			local pictureid = a.ItemName.PID.Value
			print(pictureid)
			local slot =  p.PlayerGui.InvGui.Frame:FindFirstChild(i)
			slot.Image = pictureid
			print(slot.Image)
		end)
	end
	
	
end)



--make a for loop and create 12 diffrent folders for each slot

--make sure its easy to add more to later on

Just simply add “rbxassetid://“ before the numbers. That should fix it.

Line 27 would be something like this:

slot.Image = “rbxassetid://“..pictureid 

This will add “rbxassetid://“ before the picture id you put.