Starting and stopping a drum loop in MainStage

Hi, i've just started using Mainstage 2.1.2 and I'm setting up a B3/bass/drums split to accompany a vocalist. I'm trying to put in a drum loop from studio drummer which I use from Native Instruments. My issue is I need to be able to setup an action where I use a command on my keyboard (button or key or pedal to initiate a stop on the drums and then start them again when i choose....for instance for a bass solo, or even to kill the drums at the end of the tune). I succeeded in doing an action which muted it but i need it to stop so that when the vocalist comes in again the drums will be in time. i.e starting the drums again will just be like starting the track from scratch rather than have it running silently in the background which is what the mute/unmute does. Hope this makes sense and any help would be grealy appreciated.