Awesome. My external is definitely working fine, but it's simple and maybe sensel morph uses more stuff, so you gotta tell me and explain what you need. This is what I was hoping asking around about this, someone with a particular need.
I took that external as a base and out of all midi messages possible, it listens to note on, note off, CC #74 (commonly used for moving through the 'y' axis), channel pressure and pitch bend (commonly used for moving through the 'x' axis), but I know the [mpeparse] in MAX listens to ALL Midi messages possible, even polyphonic aftertouch, which doesn't seem to make sense to me, since using MPE for channel pressure is basically the same as using polyphonic aftertouch, and polyphonic aftertouch is already much better anyway!
The reason I guess that MPE came up is that, besides pressure, these more fancy new and modern controllers do care about a bidimensional axis (x, y), and then it makes sense to group them all in the same idea and use pressure (as a 'z' dimension) instead of polyphonic aftertouch.
I see some fancy new controllers are also using note off and part of all this, which is something I really find cool and too bad it kinda got lost to oblivion for the most part.
And there are also other messages, like program change, other control numbers you can use and whatever, not sure if sensel uses any of that.
I can expand my external so it listens to all messages and so be it. So far it just does the same as the original one I had a look at.
Now, besides all that, which you could even use regular simple vanilla objects (excluding 'note off'), MPE can also define different 'zones', and the starting channel for each zone. This is where it's still tricky to me. I have no idea yet how to deal with it in an external, and it seems obvious to me that you can't do that in Vanilla. And my original request to add MPE support into Vanilla would require also managing this bit.
Anyway, this is what I can make of all this for now. We can also talk in private so you can explain me the full features of sensel morph, what you need, and what I need to do so you can test it.
cheers