How do I make an ImageLabel do something when it touches another ImageLabel?

(Sorry if my english is bad)

I'm trying to make a game based in Space Invaders in a Gui and I need to make an Image Label teleport when it touches another Image Label, I tried with this script but it doesnt work

while true do
repeat
wait(0.000001)
local AL = script.Parent
local L = script.Parent.Parent.Laser
local B = script.Parent.Parent.Spaceship
if L.Position == AL.Position then 
L.Position = B.Position
end
until L.Position == AL.Position
end

How can I make it work?