Crystal Report Filtering

Hey all,

We are trying to setup a filter for one of our reports and we can't seem to get it to work.  We have data at different levels (Company, Territory, Region, State, Area, Zone).  We're trying to set it up so people have the ability to see what's in their area and everything under it (i.e., Zone users only see Zone data, State users see State, Area, and Zone, etc.). 

Has anyone done something like this before and can provide us with help or tips on how to do it?  

Thanks,
Matt