DJM-250Mk2 Rekordbox DVS PC Master Out

Hi there

I have a new DJM-250Mk2 that I'm using with DVS in Rekordbox on Windows 10.

I cannot see the option for PC MASTER OUT when using the DJM-250Mk2 which I need as I'm looking to stream my set in OBS.

How can I get the Rekordbox audio output into OBS?

Thank you :)