Yes, that is what I am trying to do.  The Tech 21 manual may be short, but it is not clear!

I did get a FS3X and that worked for me – my sister is going to see if she can use the Midi Mongoose with her keyboard equipment.  

Dan

Basically, almost every function of H9 can be controlled through MIDI. But first, you need to figure out what MIDI messages you are sending from your Tech 21 MIDI controller. After that, using H9 Control can definitely help you assign MIDI messages' functions. See attachments.