Please let us know the is include operator in the filter condition. Will it be like in operator SQL?
"is included in" helps you create the IN clause in SQL query.
Lets say you wish to search recipients with age either as 10 or 20 or 30 you can set the filtering condition as
@age is included in 10,20,30
In other words, the value section in the filter editor should contain value comma separated.
Hope this helps.