Assigning drum samples to electronic kit

[Dwutah]

I would like to use my Alesis Nitro electronic drum kit to trigger samples in AEM. When I connect it most drums are assigned appropriately, i.e. toms line up, crash, ride...
However the snare pad triggers a bass drum and the rim triggers a snare. I can't see how you reassign which pad triggers what sample. This would of course be useful for accessing the broader variety of samples as well. 
Thanks.

[dwrae]

The app uses the general MIDI assignments (see http://computermusicresource.com/GM.Perc...eyMap.html). Because you cannot change it inside the app, you would need to change the MIDI CC number on your drum kit.

[Dwutah]

Thanks! That's helpful