question regarding primate in fusion for mac new beta versio

Primatte is finally showing up in the Matte menu but when I drag the node up to get the the eye dropper to show up to select the green (watched videos on the windows side of it and that is what they show hot to get it to show up) it doesn't show up, or a pop up window comes up saying I have to buy Fusion 8 Studio. Is anyone experiencing this as well? I also tried turning on and off the little black dots on the bottom left of the Fusion node and still no go.

Mac Pro late model 2013, 128 gigs of ram, 6 core, latest El Capitan.