No One Can Help Me On This Prolem??????

or it may be too simple to care about?

My scenario is:

I want to pass a multi-value parameter, Employee, with value set string[]{n1,n2,..,nk} to the report1. {n1,n2,..,nk} is a subset of whole employee name set {n1,n2,...,nk,...,nm}(k<=m), and it value is based on the user's access.

when user open the report1, he/she can select one or more user name from the Employee dropdown value list.

my problem is, there's no checkbox at the leftside of the Employee values to let user choose the value, so all the {n1,n2,..,nk} are selected as the value of @Employee.

I spent time on setting 'Available values' uner "Report-->Report Paramters-->Employee", but can't get what I want.

P.S., I do check the 'multi-value' for @Employee

I think it should not be a complex one, but I am unluky.

Could somebody give a suggetion or idea?

Thanks a lot

Jone