Ok, you already may have the scripts but just dont know how to use then. Take a simple lever script that gives player some random storage right? Then, use it for the First lever. for the second one, u need to check if the player has the storage gained at the first lever, if so, he gets ANOTHER storage. for the third lever, you need to check both storages, and if it returns true (player has both storages) it removes the bars, if not, just include the "else" "You dont used the levers correctly"... Got it?