Flightsimpm B 737 throttle and PMDG 777 300.

I have for a long time had Flightsimpm B 737 throttle, and used it with PMDG B737 800 in FS 2020. Now I have also bought PMDG 777 300, and I try to assign the throttle to the B777. The throttle, flap and spoiler levers work as they should. The trim, parkingbrakes, TO/ GA button and the AT pushbutton also works, but the fuel valves does not work. They are assigned using Fsuipc. Is it a way I can assign the fuel valves to make them work in both aircrafts?

Tor Arild Danielsen