What I mean is, you would load this max device and it would apply portomento to whatever instrument you had loaded - for instance, a simpler instrument. Does someone here who's good with max know if this is possible?
MIDI control number 65 turns portamento on/off for the receiving device on the specified channel. Portamento time is MIDI control number 5 (MSB, coarse control) and 37 (LSB, fine control). It's up to the receiving device to implement this capability (or not).