COM1 identifier

I am currently building a small “radio module” for COM and NAV frequencies management with Arduino/LCD screen/Mobiflight. It works well and I’m able to print current and standby freqs, swap them etc…

I have seen Garmin radio able to print the frequency identifier, for instance “LFMT Twr” for LFMT tower. Does someinone have an idea how to do that with Mobiflight? Any FSUIPC offset available for that?

Thanks!