I have a Spider IV 120 and a FBV Shortboard MKII. The FBV is connected to my computer via USB and I'm using the Line 6 FBV Control software. I want to assign the built in expression pedal that is typically controlling volume on my Spider or the external expression pedal "PEDAL 2" to whatever it is that controls the "FX3" "Mix" parameter on the Spider. In other words, I want to control the level of the mix parameter on the delay effect via one of those continuous controllers. I see things in the list like "002 - Breath Control" and "080 General Control 8", but which one of those things controls that delay mix parameter, and where do I look that up for the Spider IV 120?
See attached screenshot. Thanks in advance for any help you offer!