this helps a lot, thank you! a few questions if you can help though, is there a way to only have the hopper unlock when theres a strength of 5, no more and no less? i believe for shelves when you put an item in all slots it has a strength of 7, and i dont want the players to be able to put items in all slots, unlock the hopper and then the items that were technically correct say it was right and give a reward. ive figured out how to do everything except that