Not a midi expert by any means. But what I think you need to do is set the midi input on the intsrument track to be from the VST. Also, is there an instrument selected from the browser? That may be needed also.
FWIW, this may be better suited for a forum post in the studio one forums. This q/a site is in the beginning stages, and most what I see are Feature Requests. You may get better traction at the forums. The forums also allow for better back and forth responses as the situation starts evolving.