Set group extra data

const previous = JSON.parse(group.ex || '{}');

await openimsdk.setGroupInfo({
  groupID,
  ex: JSON.stringify({
    ...previous,
    projectID: 'project-42',
  }),
});

ex is a complete string; the SDK does not merge individual JSON fields automatically. If several modules share it, assign stable namespaces and preserve data from other modules before writing.

After the Promise succeeds, use groupID to update the matching group profile when OnGroupInfoChanged arrives. See Group overview for the complete listener.