Here is an additional approach that we came up with to solve the 'report header' issue. This solution uses a calculated data item (Report Description) created in the designer that makes use of the concatenation and format operators. The formula in text mode is here:
Concatenate('Report is for this period: ', Format('Date by Month'n[Raw], 'MONYY5.'))
The report example includes a list table object that displays data for periods. A period is selected using a drop-down list. A button bar is incorporated to display the header text. Interactions are defined between the drop-down list and the list table and the drop-down list and the button bar. I have attached screen shots of the report in viewer mode, the calculation of the Report Description data item, the button style, roles, and properties, and the interactions.
I hope this solution will be useful to you.
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