Calling variable in Query’s ‘Is included in’ operator  inside  a Report

Hello everyone,

I am trying to use "is included in" in the Query activity of a Report where the values are coming from a Textbox of a report through a variable.

EX: Country is included in $([vars/Country])

Ex of values: X,Y,Z

Instead of considering it as separate value the condition is considering it as a single string and returning no value.

There is already a similar post but is for the query activity of a Workflow.

Solved: Calling instance variable in Query’s ‘Is included ... - Adobe Experience League Community - 641694

Where the accepted answer to modify the query in Advance section of the Query activity

But In my case For Report, Query activity doesn't have Advance Tab.

Please provide your valuable suggestions.