"Nevermind, I found the answer. I attach a file for someone who has a similar problem. You can also play around with some disactive trigge..."

"Thanks for your reply! Maybe I haven't made myself clear enough. According to your advice, I've made a very short example of what I want ..."

"Hi! I'm doing a drag & drop game (using freeform) and I need to allow only one object in a drop target, which has different states on..."