Smartaudio VTX power control using Rush tank max solo 2.5

Greetings

Is it possible to use smartaudio in ardupilot with rush tank solo max 2.5 ?

Or use IRC trump in ardupilot with RUSHFPV OverShoot 3.3G 4W ?

I am using ELRS 900 RX in serial 1 ( CRSF )

And serial 2 for smartaudio or IRC trump ( TX wire only )

parameters I set in mission planner for the vtx :

Serial2_protocol → smartaudio 37 or IRC trump 44

Serialx_options → half-duplex

VTX_ENABLE set to 1

VTX_OPTIONS → set pit mode until armed

RC7_OPTIONS to 94 VTX power ( my tx aux 7 switch )

so far I could not see the power change when flipping the switch.

And OSD VTX power shows ?

Please help, Your help is much appreciated