When I'm saying controlling, I mean requesting ground services.
I just saw that Pushback Express can request ground services, like the Jetway, Stairs, Catering, Luggage and Ground Power automatically.
Not really, since I already manage to request all this ground services with a lua script. You gave me the idea for keypress to that control in MSFS, and with the ipc.control, everything is now working.
When I open the doors of the aircraft, it calls the ground power and catering, after a while luggage and jetway/stairs. Boarding simulated with ipc.sleep, then the jetway/stairs and ground power are disconnected, without the need for ATC and everything automatically.
Thanks a lot for the help John.