Corona Distance and Forest Pack

Good morning,
I was trying to use a forest object inside corona distance texmap as a node input, but it seems it doesn’t work.
Any suggestion? I was reading on another post on the forum that it should work without problems.
I’m using corona renderer 6, 3ds max 2019, and forest pack 6.2.1.

Thanks in advance,
Riccardo.

Anyone who can help me?

What’s selected as the object? the forest pack or the plane? Not sure if it can be done on a forest pack object.

The forest pack is selected as the object.
I think it should work, in this topic it seems to works fine even though it shows another problem which I don’t mind https://forum.corona-renderer.com/ Corona distance and Forest pack