Hi! I was thinking that my next game should be a kind of a memory game. And I have already started to look at it. But I have a problem I don't know how to solve. I have a board with for example 10 random points I use as a child for the objects which will appear randomly on these points. First time only one object will be created randomly. And then I need to click on it, then two new objects will be created, and then three, four, and so on. But sometimes it creates two objects at the same random point. I don't want that. I have tried different ways, but can't make it. Does somebody know a way to do this?