Topic's subject is meaningless, sorry, but here is the explanation:
I want to use touch input to change grid frames but also to undo these changes. When we touch an untouched grid this one will change color but when we go that path backwards they will turn their original frame, that's what I want to make.
I know the events below are obviously wrong but I put this here to learn how to avoid this mistake.
<img src="https://dl.dropboxusercontent.com/u/87325929/problem.png" border="0" />
thanks in advance.