Throw mode code (dronekit)

I am writing a code related to throw mode. firstly disarming ,then iha.mode =VehicleMode(“THROW”) at the end iha.armed= True . I didn’t receiver error code so far. After that code didn’t work. I think I need to specify the throwing manually in the dronekit, but I didn’t know how to do this part. I am setting parameters about THROW_NEXTMODE=guided. without throwing, code does not assign guided mode.