I want to add a channel to select attribute like attribtransfert node on my otl (picture 1). But I don't know how load attribute name when we clic on the little arrow like the picture 2. I think I need to use tag maybe but I don't find the solution.
there are node examples already in houdini(ie, smooth sop and attribute delete sop), you can see whats going on by opening edit parameter interface and see the parms with menu item, you will find what you need