Expression pedal as a volume pedal?

[rosstanium]

I noticed there are two expression pedals on the Line 6 m9. Is it possible to use one of the expression pedals as an overall volume pedal?

I don't own one yet. But am thinking about it and wondered about the possibility of having one expression pedal as a simple, overall, volume controller.

[champbassist]

Here's a couple of related threads:

Volume pedal as expression pedal?

How do you turn a volume pedal into an "expression" pedal?