Default Prompt Value

Hi,

We have a requirement to pass previous month to the report if the user does not select any value in the prompt. Meaning the value needs to default with no selection but if there is selection then the value selected should be passed. We have Reporting month(string) in yyyy/mm format. Another problem is the month value displayed in the report is based on the reporting month selected. So If the value entered is null the report output doesnot display any data.

I tried using dynamic prompt by bringing getdate() as a separate query but the problem is it just defaults to the previous month and doesnt allow to any other as input.

Please let me know what you think I need to do.

Thanks,

Karthik