BCR2000 - Midi editing help

[I.AM.AN.EXIT]

Howdy,

I've had an oberheim matrix 1000 for the past few months. Until now I've been content with finding a nice preset, sampling it into ableton and putting effects on it there, but I sat down this weekend to actually figure out how to edit the patches, and after a few hours I gave up. Here's my setup:

1. I've got a Behringer BCR2000 connected to my laptop through USB.

2. The Oberheim is connected with a midi cable from the the midi out A on the BCR.

3. The Oberheim is playing a loop sent by Ableton through the BCR.

4. I'm using U-3 mode on the BCR.

5. I select a CC parameter (say 64 - release) on the BCR (edit>twiddle knob>select midi channel>select CC number>exit)

6. Turn knob...nothing happens

I've got an access virus as well, which I tried to control also from the BCR, and couldn't get to work... so I presume it is my BCR setup that is in error...

Can someone please walk me through this? I'm totally new to midi editing and CC numbers etc...

Thanks,
Bren