Bc2000 (for the BCF2000 & BCR2000)

Hi Robin
>>Now my question is, how do i tweak? How Do i have to assign knobs and how?
All knobs and the learn function do not work in other vST´s and that´s my main goal.
 
I think you need to be more specific about what you want to do to which VST.
Tweek??
If the VST won't respond to external Midi messages to adjust its parameters then you are out of luck.
Midi continuous controller (CC) messages are the common way to control VSTs - there is a preset from Behringer with all the BCR controls assigned to a different CCs.
You then assign the CC to the VST parameter with Learn on the VST , but it looks like you have already tried this

Post some more info and we'll see if we can help 

 >  Get the BC MIdi Implementation Manual, the document Secrets of BC by
> Joyce Craven, and the soft BC Manager and you are done

I seem to have had a sex change. 
All the best

Royce Craven.