Hi! Your work is really great! But there's a problem. I've added uniforms, vests and backpacks in the store and even added boxes and ammoboxes in a list, in which I choose where to put items in. I can buy uniforms, vests and backpacks, then these items will appear in boxes, but the problem is I can't sell none of them, I get a message "Unable to sell item". It's like I have none. I'm no good at scripting, and I was trying to fix it by myself but nothing came out. How to fix it?