SITL &MAVProxy question

Hello.

I am trying to create a new port on MAVProxy when I start SITL for Arudupilot.
Also, it is ideal to fix the udp port.

Does anyone know how to achieve this with the optional command when the SITL is started like below

…/Tools/autotest/sim_vehicle.py -w --map --console

I attached the file that describes my target, which referred the link below.

https://ardupilot.org/dev/docs/sitl-simulator-software-in-the-loop.html