Trying to figure out how to press the pedals in Addictive Keys in FL Studio. After some searching around, I found another program that documented the ports for the various pedals:
The pedals are arranged like a piano, with the soft pedal (MIDI CC 67) on the left, the sostenuto pedal (MIDI CC 66) in the middle, and the sustain pedal (MIDI CC 64) on the right. 1
Sending MIDI events on these ports appears to also work for Addictive Keys.