Hey vw-friends.

New to the forum, but I have a question I hope you guys can help me with.
I just changed the factorymounted radio, (think it was a rcd300) to a rcd310 DAB+. Works great, but I want the rear parking sensors displayed on the screen. I understand this is called optical parking system. My Golf has factory-fitted rear parking distanse sensors.
Now my question is, if anybody has done this before, and what I need for this to work.
I have the ross-tech vagcom so I can preform coding if necessary.

Thanks