Key Bind

[legacy-[ARC]Tank]

I need help binding a key. What i want the key to do is change my effects volume. Is there a class i can set like "set effectsvolume 41" or something like that. Also would i be able to do anything like "set effectsvolume effectsvolume+1" If someone could help me out it would be apreciated

[RoadKillGrill]

set ALAudio.ALAudioSubsystem SoundVolume .41

[legacy-[ARC]Tank]

Thanks big time dude.