How to set the Python module search path in TransPort WR21 web configuration?

Python
1

I have come across to the web configuration for TransPort WR21. I would like to integrate my custom Python file into the device, but I don’t know how to set the Python module search path.
Appreciate for any help!
Thank you.

2

Configuration – Application > Python > Python Files > Module search path
or
pycfg 0 modpath

This is from the Transport User Guide