How to show last date of the month in MR report header dynamically?

Summary:

Need to show the last date of the month in management reporting report-Header dynamically, based on the month selected in POV. No matter on which date of the month the report is run it should always show the last date of that month in Header of the report.

Content (required):

Examples: If the report is run on 6th Jan22 it should show 31st Jan22, or if run on 14th Feb22 it should show 28th Feb22...

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