They are not binary..
i believe a number between 0 and 100 is given for the analog buttons..
At least that's what I read in the manual and heard from the guy who made the hud analog joystick above..
I wouldn't have put the link there if I thought it wasn't usefull..
If you had read it you'd have seen that it was pretty hard finding the right input but in the end we (he) did..