Fetchxml CRM 2011 Pre-Filtering

How to turn CRM 2011 Pre-filtering on for Reporting Services Reports.

Open the dataset, edit the fetchxml query and add in the enableprefiltering and prefilterparametername box, this description can be whatever you like.

<fetch  version="1.0"
            output-format="xml-platform"
           mapping="logical"
           distinct="false">

<entity name="opportunityproduct"
                       enableprefiltering="true"
                       prefilterparametername="OpportunityProdFilter">