I already know how to do the gui but the script is the complicated part for me because I havent scripted in a year or so. I've recently started fixing a game I left alone for a year or 2, its basically a new trade hangout with rbx.rocks rap and VALUE. But the hard part is that I forgot how to make the refresh list button so the items never change in a person's inventory. Can someone help me out with this?

Lol scriptinghelpers my ass, couldnt even help with my question and then blocked it off.