Key bindings for dvorak keyboard users

Hello, I just downloaded star conflict and am trying to set my key bindings for the dvorak keyboard. I am having trouble setting my roll left bind to (   ’   ).  On the qwerty keyboard, this is where q would be, but on my keyboard that is where the single quotation mark is. For some reason star conflict is not letting me set roll left to single quotation mark. This is very annoying, as I cannot play the game properly now unless i set my keyboard to qwerty (which i cannot type fast enough on to communicate with other players. 


Is this a glitch or are we really not allowed to set single quotation mark as a key bind? If so why not?