How to set an Item Limit for a script spawning parts using Values?

local part = script.Parent.Part
local itemSpawn = workspace.ItemSpawned
local item = script.Parent.CurrentItem.Value

repeat
	wait(5)
	local clone = part:Clone()
	clone.Position = Vector3.new(0,0.525,0)
	clone.Transparency = 0
	clone.CanCollide = true
	clone.Parent = itemSpawn
	item = item + 1
until item == 20

The above script spawns a part that can be picked up until it spawned 20

There's another script that when the part is touched, the part get destroyed, and the currentItem.Value goes down by 1, but that is not working

local item = workspace.ItemSpawn.CurrentItem.Value

script.Parent.Touched:Connect(function)
	item = item - 1
	script.Parent:Destroy()
end)

P.S. The question was edited to fit the script I rewrote a bit