Many thanks for the replies
the reason I ask the question is, I am currently profiling my Saitek Multi Panel following a video on youtube.
In the video the guy clicks the heading button (in the simulation) and the button lights up, when he clicks the NAV
button it lights up and the Heading button goes out, which is, of course what it should do.
It is no problem making the buttons on my Saitek Panel light up as described but no lights come on in the simulation.
I'll try and contact him when I work out how to leave a comment on youtube.
Thanks