Hi Mhahn:
Thank you, I find the reason that when I try to change Gpio(13) to other random number 12, 28, the no.12 is OSC output and 28 NC.
When I try "Digital Write" template, the default required Gpio(5) is RCVR_MODE, it is not allowed and okay when I change to Gpio(4). I don't know how the staff can use the Gpio(5) to valid this template...