SetBFree sustaining notes

I’m trying to emulate my Nord Stage with the Zynthian, on the Nord you can layer a B3 sound with piano and the sustain pedal on the piano will also sustain the B3 notes (I know that’s not how a proper B3 would work, as it would have no concept of sustain, but it is often handy when playing live).

Is there a way of getting SetBFree to sustain notes if I allocate the rotary speed to a different controller? Or does the simulation not include sustained notes. Could it be done with a midi filter?