The user may want to choose a date from a prompt and then have the report dynamically choose a weeks worth of data to view.
If the user chooses 1/15/2010, he should only see data from 1/9/2010-1/15/2010

*With Tutorial Data
1. Create a Value Prompt->"Date and Time"-> Finish
2. Create a report with Date attribute and revenue metric.
3. Create an Attribute Qualification filter with the Date attribute.
Qualify on ID
Operator: Between
Custom: Prompt created in step 1
Custom: (Prompt created in step 1)-6

4. Run the report and it will prompt the user to select a date.

5. After selecting the dates, the report will show data between the date chosen, and the date set in your custom expression at the end of step 3.
