How can I make treetrunks reakt to wind?

Simple question, how can I make a treetrunk reakt to wind?
Example: https://forums.unrealengine/showthread.php?69769-Wind-in-the-woods-foliage-level&p=306386#post306386
(I didnt wanted to ask in his thread)

Either use speedtree (then it works with the wind actor) or download my vegetation package -> in the tree pro materials you can find a node structure that will let the trunk react to wind (wont work with the wind actor, but you could somehow change some stuff) :slight_smile:

Yeah, Im using your foliagepack and the windsetting is awesome :slight_smile: I dont really know how to get a tree look good in SpeedTree. It also crashed now and then, when I used it. Will have a look for the trunknode. Abit offtopic: What paintsettings did you use to paint the grass around so close? I tried different settings, but Ill end up with using about 30 minutes to fill an area in the size of your foliagemap.

You can find the part in M_bark:

I used a brush size of 8000 and a density of 3000 (in the settings from the different actors)