Commando for Special Effect at the Back!?

Level 5
Jul 4, 2004
I need help with some special effect commando.. Im making a suicide unit, and he's going to have a barrel of explosive at his back! (like a backback) .. but i dont know the commando.. ive tried with, create a special effect attached to the 'back' of triggering unit. But it dont works.. so? Whats the commando? Who knows?

Please tell me some other commands to, exept right hand/left hand, Chest and head 8)

Help me, and i will be happy