Hi, in the bass instrument, is that knob automatable?
The fastest way would be to try it out yourself: Activate write in the virtual instrument, press play from the transport, grab the knob with the mouse and twist. Stop the playback, rewind, have it play again. If the knob moves on its own, well, there is your answer. If it doesn’t move on its own, it’s not automatable.
Can you post a screenshot of the instrument and parameter that you are referring to?
Usually a parameter needs to be made ready for automation first before it can be automated.