IN order to have scene from the LZW31-SN I added automations in HASS that are triggered from the scene activated message from the LZW31-SN. This is described at Home Assistant - 2nd Gen Switch RGB working!
Basically you trigger off the event zwave.scene_activated with the LZW31-SN node_id or entity_id and the scene_data and scene_id for that event. Then the automation acitvated the scene you want.