Commando Archive

I just noticed there was a command called /throw. now if i do it on a mob , you see the grenade action in the combat queue but you dont actually throw any grenades. If i try it while riding a mount it says "You cannot Throw Grenade while riding a mount". I have lots of grenades in my inventory.. how do i get it to work? would be soooo much easier than to drag every single stack of grenades to the hotbar.. also noticed there was a command for traps.. /throwtrap