Ursa Mini Pro 4.6k G2 with Fuji XK6x20

Hello guys!
This PL-Lens is fully working on a Ursa Broadcast G2, but not on the Ursa Mini Pro G2. I can see the lens Data in the Viewfinder (Iris), but there is no Iris-Control nor RET or VTR.
Has anyone got this setup and is it working OR is the Mini Pro G2 too old to support the lens?
Best regards.
This PL-Lens is fully working on a Ursa Broadcast G2, but not on the Ursa Mini Pro G2. I can see the lens Data in the Viewfinder (Iris), but there is no Iris-Control nor RET or VTR.
Has anyone got this setup and is it working OR is the Mini Pro G2 too old to support the lens?
Best regards.