Can not select frequency which I want
I bought vaicom few month ago, it's very nice APP. But I have a problem I can't solve that I can't change frequency with command. For example, when it is easy communication on, I called "batumi" "select" “inbound". It choosen nearest airport reply like "Sochi". However,if I put two tankers in a mission, I called "arco,select. It works. I call another tanker, frequency will change as correct. " My English is not well, I don't know even you understand my problem.