For testing, leave Function = 2. This causes the left sensor to send modulation messages (CC#1). Set the DATA NEAR to 0 and DATA FAR to 127. Now look for a screen in Ableton that monitors incoming MIDI data. You should see streams of NOTE ON/NOTE OFF messages when you wave your right hand, and streams of MOD data when you wave the left. Can you do this? This will prove out what data is making it to Ableton. If the data is arriving, then you should be able to hear modulation of a vst with that left hand: notes with the right, modulation (usually vibrato) with the left. Can you make this happen?