Expression Pedal for Ableton

I am trying to use my dunlop expression pedal for MC6 Pro to control Ableton Live.

I am using port 1 and TRS cable to connect the expression pedal and it seems like it’s working cause I can see the % changes and the editor reads the pedal whenever I use it.

I assigned the expression pedal to MIDI Channel 1 (Ableton Live) and chose CC# and assigned the master volume fader on MIDI mapping page on Ableton. It shows that those has been linked but whenever I move my pedal, the master volume doesn’t move. Rather, it changes the bank on my MC6.

Does anyone knows how to fix this issue? I did calibrate the expression pedal as well.