Thanks, ShaunR, it is a good idea. It would be a good inspiration in the other parts of my projects. But it is not so easy. I need to control the loop, because I have got more conponents inside that are dependent on "i" of the loop. So I need several buttons for start, pause, pause and..., stop connected with the loop directly. I think it can be solved with Event Structure inside the loop, but I can not use it properly. Thanks
To Neville D: No...