Hi all. This is probably an easy fix but I can’t find it! I’m new to the hx effects so go easy on me please!!! I have a line6 ex1and Dunlop dvp4 expression pedals. I have tried both with hx effects for volume control which seem to work apart from when I get to the heel position where it should be silent it is like a toggle switch and returning the volume to full. You can see the vol icon on the display turning off at the heel position . I don’t have the vol assigned to any of the 6 switches. I want to keep it hidden and use the switches for other effects. Just looking for the expression pedal to go from silent to 100% Any ideas ?