Bae146 series nav freq question

Hi there
I downloaded the Bae 146-300 and have a quick question on setting the nav frequency on the radio IT WON'T WORK. it and the coms settings cannot be changed although the ADF and the Transponder can has anyone else came across this problem and if so is there a work around for it?
thanks a mill
sullie
I downloaded the Bae 146-300 and have a quick question on setting the nav frequency on the radio IT WON'T WORK. it and the coms settings cannot be changed although the ADF and the Transponder can has anyone else came across this problem and if so is there a work around for it?
thanks a mill
sullie