I'm trying to configure my Morrison Digital Trumpet to work with the portamento function of the Gofriller cello. While a keyboard allows the low note-on velocity that enables portamento, I can't replicate that with the MDT, whose valves send "on or off" switches. Attempting to engage the portamento function of the MDT, which sends CC 5 and CC 65, has been unsuccessful. I can't find reference to the CC of the portamento function in the Gofriller manual, or I could map to it.

Anyone with any ideas re: getting portamento to work? Other functions work well: using the breath function to control volume, and using the vibrato lever to actuate the instrument vibrato is particularly nice.

Thanks in advance for assistance/advice.