Transponder MODE C/STBY , Ident , and squawk code not changed with offsets

Hi,

My home cockpit is finished and now I'm testing and fine tuning.

I use vPilot and try to switch transponder from Mode C /STBY with offset 0x7B91.
I can ONLY can switch from MCDU.
If I try from menue or writing offset 0x7B91 0 or 1 can not.
if FMGS is not started it works.

The same is with Ident (0x7B93)

When writing squawk code in 0x354 in MCDU is not changed.
In case when I change in MCDU it is changed on my panel ( data is read from 0x354)

Am I doing something wrong ?

TCAS switching works fine.

I use p3dv4.3 and 50.2.

Thanks for any answer.
Borna ;-)

You need press CLR 3 times then input the new code as real world A320
Not the live digit update, but Transponder Keys (which assigned in FMGS_Config) has already functioned.

Thanks for answer. I will try and report.
Any idea about mode c / stby ?
How do you change it ?

I did not use fsuipc offset for Sq mode C/ Standby. All button in XPNDR unit, I assigned joystick button in FMGS Config.
It works well with vPilot/Vatsim

Yes it works with joystick button, I want with offset because my panel comunicate by Com port. In final solution I will connect these buttons to USB device which is presented like joystick.
My last question:
Do you know how to call these actions by LUA programing in FSUIPC ?

No I dont know how to programming LUA. Just using Mobiflight - free software to reflect FSUIPC offset./

Thanks.

Borna ;-)