Where clause for Ownerid

Any idea why this simple where clause doesn’t work for OwnerID. It does produce results for other columns. Anything special I need to do for ownerID? BTW< I have tried “”, ’ ’ Contains, Matches etc.

Nevermind: format like this works:

The ownerId column is of the string type. Comparison operators for the string type require the value to be in single quotes.

This is covered in the documentation:
https://backendless.com/docs/rest/data_search_with_where_clause.html

Regards,
Mark