MWM PHASE with REKORD BOX

So I have Phase running on serato quite easily but having difficulty connecting rekordbox to my phase device.

Its worth mentioning I do not have a DJM and running a Behringer DDM-4000.

But I am fully subscribed with Rekordbox as I use my ds1 denon for DVS and worked fine. It just doesn't seem to recognise phase. I've been told to directly connect the line in RCA directly in to the phase output no luck. 

Hard to find info on the set up so if anyone could help. That would be great.