why the Speedtree can't physics view(P) buttom?

[stevenchau]

why the Speedtree can't physics view(P) buttom?
look the photo:


how can I press the buttom please ?

[starboy8024]

i want to know it too.

http://www.speedtree.com/showcase/?video=physx-breaking

they say"this is a feature-incomplete beta release.not intended for production use."

[Xendance]

That feature is not integrated into UE 3 as far as I know. And as Starboy said, the feature itself is incomplete and not intended for production use.