Vive tracker connection issue?

Hi,

I have a vive tracker (no base station and no HMD) that i am trying to use as a tracker for a camera in a virtual production set up.
I believe i have set up the vive tracker correctly:
paired the device
changed the tracker role to camera
changed the binding and activated the null driver so i can use without the HMD
When i add a motion controller to the objet in unreal and change the motion source to special_1 nothing happens when i move the tracker.

Any help or point in the right direction would be greatly appreciated.

Thanks,
Ricky

Without base stations your tracker will not be able to track, they determine it’s position.