Radio button group prompt, filter by user

[jsilver]

I would like to filter a "radio button group" prompt depending on the user logged in.  For example, assume a radio button prompt exists with three options (state, county, town).  If UserA is logged in, I want all three options to display (i.e., state, county, town).  If UserB is logged in, I want just the first two options to display (i.e., state, county).  Additionally, I would like to extend this functionality to "anonymous" users.  Using the same radio button example, if an anonymous user is running the report, I want just the first two options to display (i.e., state, county).

Thanks in advance for your help.

[bloggerman]

One way is you could use data security feature, which would implement a filter on a query subject based on a condition, logged in user. You can then use the relevant field from the query subject in the prompt.

[jsilver]

Thanks for the quick response.  Can this be implemented at the report level or does this have to be at the FM model level?