Many experiments later it is still not working...
The problem is that the DHT-11 is not recognised and the code jumps to the label "subloop".
Nobody got an idea or experience with the DHT-11 sensor?

(I have programmed the PIC16F628 with this hexfile https://github.com/candrian/Thermome.../ThermometerV2 and then it is working, so the DHT-11 isn't the problem. It is even working with a 4 MHz resonator. But I would like to add some other functions in PicBasic.)