I want to stack objects. It should work like this:
There is a "plus" and a "minus" button. If you click(touch) on the "plus" button a new object should appear on top of the other. Then you click again on the "plus" button and a new object appears again on top of the other two objects. Like building a tower... If you click on the "minus" button the object should dissapear.
can u please help me?