Specific VSTs dont accept expression, cc11

Hello together,

I recently bought Olympus Choirs, so, a pretty new libary. Now, I use Cubase 5 Studio, and my expression works perfectly on all my libaries, except Olympus. It records and shows the curves, but has no effect. Does anyone know how to solve this problem? Its pretty anoying to first export it as wave and do the expression there manually. Do I need to make some kind of rooting, or connecting first?

Thanks a lot (;