@rop I thought MyTZ object was already declared in your library, my fault.
Thank you for your explanation about objects. I misunderstood your previous directions and I thought I must use them to the widget to work. It seems it was a lot easier to do than that! The widgets I need to display are really simple, just a small text or icon reflecting the state of some variable's value, so I think a regular function will work. I'll try one more time. ;)