in houdini, i can fill multi hdas to a operator path and get a merged object in subnet.
but when the operator path exposed to unreal via houdini engine, it becomes a single asset input, i can only assgin a single hda to it.
how can i accomplish multi asset input?

found the solution:
actually houdini support multi param and it can exposed to ue
https://www.sidefx.com/forum/topic/55024/ [www.sidefx.com]