EW Hollywood Strings Vibrato

I am using Nuendo 8 but am posting here in the hope that someone has had this issue while using Hollywood Strings. I have read the HS manual and have loaded the correct samples. It plays fine but doesn’t respond to CC1 or CC11 signals which are supposed to cause vibrato to be expressed. Is anybody else using HW Strings/Play and can give me any suggestions? BTW: I have tried to post to the SoundsOnline (HW Strings) forum but haven’t figured out how.