Hey, I'm using Chest Commands plugin on my minecraft server and I'd like to just make menu, where people buy something for points, but that thing they bought is not gonna appear anymore. For example.. I have menu where you can buy permission for fly,heal and feed.. I wanna buy fly permission, so I buy it.. and when I open the menu again, I can't do it anymore, because I already did.. so it doesn't show up anymore. Can anyone give me some tips how to do that(if it's possible)?