Cody Spahr

They best method to achieve this would be to use Unreals native tools like vertex painting, or something like visual scripting tools to edit an unreal actor, then use that actor as an input for your HDA. Overall Houdini Engine is trying to move away from workflows like editable nodes to avoid destructive workflows.

This is still not supported right now with Houdini Plugin. Sorry.

Hey there, you will need an input in your HDA for curves. This tree is built around the V1 Houdini Engine plugin workflow where embedded curves in your network would be set as editable. Now in V2, you can just set up an input, and in Unity just plug in as many curves as you want. It's a much more flexible system, easier to set up, and the idea is it gives you more control in Unity.

In the HDA, just set the max inputs to 1(find this by right clicking the HDA and go to type properties, and it's under the Basic tab), then in the network replace the `curve_Tree` node at the top of the network with your new Input node(see image). Save that and now in Unity you can set your HDA to use curves and select them from your world.