Thank u rahul for reply. I tried in new report also. The error is same. Even i want to point one more thing that, even when i am creating static list of values then also, i am not getting list of values from the database. So, no dropdown is cmng, but only textbox. And secondly, if i select to append database values in static parameter, then it doesnt show any databse values.
So, can it be some configuration problem? bcz, in both the cases issues are there..