On Page Prompts (prevent page from rendering until Finish is engaged)

[pammassey]

I have created a report with on page prompts.  The list report should not render until the prompts options are chosen by the user and the Finish button is engaged.  Having trouble keeping the list from rendering. 

[bdbits]

You should be able to do this with a render variable that checks to see if any of the parameters are null, then only render the list the parameters are satisfied.