do anyone know why if I connect [vertex map] node to [blend weight] in [dispacement vertex mix] node,
and octane wouldn't recognize the vertex map?(octane 2020.2)


there are few ways I tried but all failed:
1.bake texture node to vertex map, but usesless
2.change vextex tag's position to the first one, but useless
Could it be a bug?
Thank you!
-Mike