Can you use a hierarchy as a parameter in SSRS?

All,
 
I was attempting to create a SSRS report and then will take that report and add it into performance point.  In PerformancePoint, I am able to have one dropdown parameter list with a tree like hierarchy coming from a SSAS cube.  For instance, my geography parameter in PerformancePoint is one drop down that goes from Region > Area > Country in a tree form.

In SSRS I don't see any way at all to create ONE parameter that has a dropdown in this form.  It seems like I have to bring in each component separately.  So I would have one Region drop down, One Area dropdown and one Country drop down.  Yes I can make them cascading.  But is there

1) ANY way at all to create one parameter from a SSAS hierarchy and if NOT then

2) How can I link the SSRS report into my dashboard filter that is one drop down?  I do NOT want the users to have to select from region, then from area then from country.

Thanks,
Mindy