Using same button for entering/exiting some part of code?

[CuriousOne]

Thanks everyone. I've modified that code in the way that it now works - there is additional check for MENUITEM value inside a button press loop, but the question is still active - why the code above slows down in that way? That's simply not logical.

[amgen]

if there is room, you could put some 'temporary' code to serout or debug at a few locations and see where it isn't doing what is expected ! looks like there are quite a number of 'states' your program could be looping through.