I have no licence of ISIS. If I had I would be happy
Well, I have now the clock working(it means running the way it has to do) and it looks like the settings of the menu is now a software-thing what I have to debug and modificate. My old version did work but to make it timerinterrupt I had to change the code. So, I think I have make some mistakes at that part of the job. It looks like it runs the menu for one time and don't wait for inputs.
For this part thanks for all your help!

It is a option to use also a interrupt for the inputbuttons...