How do I remove a node from a group (not the all on/all off thing)

I have two Fibaro Dimmer 2, and I added them by accident to the same group, group 2. I meant to add only one there. But that means that when I press the button, both will react. I have tried to remove them with the service zwave.change_association and this code:

{"association": "remove", "node_id": 13, "group": 2, "target_node_id": 13}

But that doesn’t do anything at all! The original code for target_node_id was 255, which is the all on/all off but that’s not what I’m trying to remove, and I’ve already tried that without result. Can somebody please tell me how to do this? Or do I need to reset the switch and add it again?

I reset the wall switch, marked it as dead and ran “replace failed node”, and that part is now up and running. :slight_smile: