alright, hopefully this will be my last questioin for a while. Is it true that you can't have multiple items? I've tried to do it, but for some reason I can't. Is there any way to get past this?
No, it is not true... Make sure you activated the "Show multiple inventory items multiple times"-Options in the Game Editor Options Pane...
Read the manual for details please.
And even without that, you can have multiples of the same item (I'm assuming that's what you meant?), it just doesn't show in your inv.window.