Using a Moog ev2 expression pedal in sonar x2

Although I've used Sonar since Cakewalk's version III, I've never plugged in an expression pedal. I'm using a Roland RG300X keyboard with X2 Producer.  I plugged in the pedal to the non-damper output (labeled "control"). I opened an existing project, and wanted to set up a Dim Pro track (organ) to use that pedal to control volume. It didn't work automatically, so I went into the Dimension Pro midi matrix of the particular synth patch I was using. I added CC11 and indicated it should control "volume all."  I set the paramaters at 45 and 4.0, respectively. But still no go. I remember setting my pitch bend wheel to do this same thing, and that works, but the pedal mapping did not. Does anyone know if there's a way to set the pedal globally for volume, or perhaps to use it for wah on guitar patches and volume on other patches such as organ. Possibly some other VST's have built in settings for this, but I usually use Dim Pro for organ sounds (the Classic Keys group).
If anyone can give me a clear, step by step guide about using the expression pedal in X2, please let me know, and I'd greatly appreciate it.
Thanks to all..
Dave

Firstly, I suspect you need to check what CC (if any) the pedal is actually sending. This may require configuring in the keyboard.

MIDIoX is good for identifying what's being sent where MIDI wise.

Secondly, although CC7 is generally considered to be "volume", what each CC does is generally down to what the synth in question decides to do with it. For example, filter resonance in one synth may be CC25, in another it might be CCsomethingelse.

CC11 is generally called "expression". What this does varies not only from synth to synth but patch to patch. In most synths it can be pointed at whatever you want it to do via the synth's internal CC routing. For example, in one Mopho patch I might set "expression/CC11" to control filter frequency, in another patch it may be controlling an LFO rate.

The modulation wheel is often a special case in that it's referred to as the wheel rather than as a CC number.

First off I suggest you check which CC the controller is sending  when the pedal is moved. If it's sending anything at all....

As well as an app like MIDIox you can check what's going on using Sonar  - if a MIDI channel is receiving MIDI data of any kind the red "light" at the top of the meter lights up. Assuming that's working, you can then record some of that MIDI and look in the events list or piano roll view to see which CC is being received by Sonar.