Using "Group.Set" not working

Configuration
1

Hey guys - from inside HASS, I’m trying to use the webui to test out setting members of a group using group.set; however it shows that the call was made, but no change is reflected in my groups - even if I call group.reload.

My json payload looks like:
{
“object_id” :“group.kids”,
“name”: “Kids”,
“view”: “true”,
“icon”: “mdi:camera”,
“control”: “hidden”,
“visible”: “true”,
“entities”: “light.bathroom__sconce”
}

I would expect light.bathroom__sconce to be the only member of the group after this runs, but the original entities remain. Anyone have any ideas how to troubleshoot this?

2

Change:
"object_id": "group.kids"
to:
"object_id": "kids"
and
"entities": "light.bathroom__sconce"
to:
"entities": ["light.bathroom__sconce"]

From Developer Tools - Services:

Parameter: object_id
Description: Group id and part of entity id.
Example: test_group

JSON spec: http://www.json.org/