Cant make selection box work on Cloned parts, help?

My part that i am cloning multiple times has SelectionBox object and this script in it:

box = script.Parent.SelectionBox

while true do
	wait(0)
	box.Adornee = script.Parent
	wait(0.5)
end

And under StarterGui i have LocalScript:

wait(1)

Player = game.Players.LocalPlayer
Mouse = Player:GetMouse()
local Part = game.Workspace.clonedparts.kockastone -- this is where i store new cloned parts

while true do
	if Mouse.Target == Part then
		Mouse.Target.SelectionBox.Visible = true
	else
		Part.SelectionBox.Visible = false
	end
	wait(0)
end

I found the problem. As it turns out you crash the script if you call out

Part = game.Workspace.clonedparts.kockastone

multiple times, so i changed things and used

Part = script.Parent 

instead.

Thx for all your help!