Cascading Parameter not working

Hi All ,

I have created a cascading parameter in which the values are passed into Sku multiparameter drop down from the

month parameter . So if the person selects December then the SKu multiparamter displays only SKU for the month of December . So that's working fine in the BIDS .

But after deploying it to the report server i try to run the same report in the web browser  the values are cascading as it should like in BIDS but if i ' SELECT ALL ' in the multi parameter drop down there is no result but if i select just 2- 3 values it runs fine . There are around 5000-6000 values of SKU for a month  . Am not using a store procedure so no need to declare a max variable for the SKU multi parameter drop down  .

Kindly Suggest why select all is not working in the web browser compare to the same solution in the BIDS .Using SSRS 2008r2

Thanks

Priya