click finish on the cascading prompts

[jd]

I have a report which has promps and list on the report page only. this is a detail report.
master report has region prompt. when I select region on the master report my drillthrough report shows with all other promts as well as that particular with region data.

Here is my question: on detail report I have 5 cascading prompts. when I select one prompt it shows the prompts and data again for that prompt but what I needis once I select the prompt I have to go bottom of the prompts and click on the finish then only my report has to run.

how to achive this.