F16 SYM roller (Hud brightness nob) is not working

[Smallard]

When I use the roller I scroll up and it goes up, but when I release and stop scrolling up, it immediately turns off and the roller goes back to its starting position. Does anyone know what is happening or how I can fix this?

[razo+r]

Looks like there is an axis assigned to the brightness roller. Check your controll assignements.

[Smallard]

I looked and there was nothing connected to it