i have 2 parameters, Category, SubCategory and both are multi-valued. SubCategory is depend on Category. Default value is set to all avaliable values [Select All]. This issue is if user changes the Category value(1st parameter) ,and the default selection of the SubCategory parameter does not refreshed.

Hi Jayavardhan, According to my understanding,You say that the category values selected should filter the sub category values, To achieve that better give the category values in the dataset of subcategory using IN clause.

Hi There, I am unsure if this is same as the thread at the below link: http://social.technet.microsoft.com/Forums/en/sqlreportingservices/thread/836e8b43-9531-43d8-9dbc-527a4c7b4d62 Please let me know if this is not same as that in your case. HTH. Cheers, IceQBPlease mark correct answers :)