Parameters defined in .rdl and how they are applied in Report Manager

One of my reports is defined as follows in .rdl:

<ReportParameter Name="ExplicitProject">
<DataType>String</DataType>
<DefaultValue>
<Values>
<Value>Agile_1029c</Value>
</Values>
</DefaultValue>
<AllowBlank>true</AllowBlank>
<Prompt>ExplicitProject</Prompt>
</ReportParameter>

In Report Manager, I have overriden this value by specifying that the default value be an empty string. The report uses the value I specified in Report Manager.

How does this work? Where does Report Server store the overriden definition? There seem to be two places where the rendering is getting its specification. Is there a hierarchy i.e. first check .rdl, then check (wherever the overrides are stored?)

Kind Regards
Jean-Pierre

The overridden parameters are stored in the report catalog. If you override the report parameters in the Report Manager and subsequently deploy the report definition with new default values, you will find that the parameter default values don't change. This is done to favor the report administrators. You can only change default values of a deployed report programatically. The other option is to delete the report and re-deploy.|||

Thank you Teo. THis has been of great help.