Display Choosen Parameters In Report

Hi,



I have the following situation.

I create reports based on report models

In one of my reports i use different parameters

- Date selection : datefrom and dateto

- multivalue selection : list of users



In my report i display the selected parameters



I use the following expression to display my selected users :

="Selected Users: " & join(Parameters!Users.label, " - ")



When i select a time frame (from date 1/5/2007 to 15/5/2007) and i select "All Users"

my expression returns all the users but doesn't take the time frame in considiration.



example : my expression returns : user A, user B, user C, user D, user E

but in my time frame in only have data for user A, user C and user E



is the a way to limit my expression to display only the users where there is data available for ?



Greetings

Vinnie