Hi fellow pilots!   
I've been reading and having fun creating new binds for my thrustmaster Warthog for the F5e. I managed to have my switches working (for example, I use my APU switch for batteries ON/OFF).    
I'm now working on the setting for this magnificent bird. However, I cannot for the life of me figure out how I get the function for 'master-arm' to toggle.    
In other words, I want my master arm on when I flip a switch, and off when I flip it back.    
I googled it, but can't found an answer. Can anyone help me?    
Thanks and have a nice week-end guys!