Dear,
let me describe by this way
i have parameter named " login Name" and report result shuold display the parameter was filterd by in header
------------------Report Header----------------------------------
-----------------Here is display login name i was filter by ------------------
but i have another column have the Actual name(in the datasource) for this user and I should be displaye in the header the actual name for this login name i was filterd by
hope you got what's i mean