Hi Ross,
tested it on a revision 85. For me it worked. If your column to be checked is really called "Status" I can see just one error. The further arguments have to be enclosed in single quotes.
So your example would be:
- abstract: not in("column_name",'filter_value1', 'filter_value2',...)
- specific: not in ("Status",'Completed')
Please can you try that. And please validate also if your first argument "Status" is the correct field name.
Best Regards,
Florian