How to assign a FW for SITL, under WSL environment?

Hi Sir,
Could any one tell me, how to run sim_vehicle.py, based on the FW I build ?

The example is like this( specifying vehicle/frame type):

sim_vehicle.py -v ArduPlane -f quadplane --console --map

But how to specify the FW I created ?

I know that this question might be basic.

Please advise. Thanks.

Jimmy