Dynamic variable update in BW Broadcasting

Hi,

We are using portal to dispaly the BW broadcasted report, we creating the setting in portal and schedule it in the backend.

We are populating the report variables dynamically however problem we are facing is when ever we add the new setting to existing workbook, report variables are not getting populated dynamically only for the new settings we need to maintain the variable entry manually, are we missing any stpes here do we need to update any table for the new settings. Please provide your inputs