Sql Server 2005 Reporting Services And XML Webservice DataSource

I am new to both Reporting Services and Webservices implementation so I am just trying to use a simple example. I found a Webservice on the internet that returns movie information:

http://www.ignyte.com/webservices/ignyte.whatsshowing.webservice/moviefunctions.asmx?wsdl

I am trying to call in using XML DataSource and with absolutely no luck. Here are the steps I have followed:

DataSource type: XML
Connection String: http://www.ignyte.com/webservices/ignyte.whatsshowing.webservice/moviefunctions.asmx

Report Data Quert:

<Query>
<SoapAction>http://www.ignyte.com/GetUpcomingMovies</SoapAction>
<Method Namespace="http://www.ignyte.com/whatsshowing" Name="GetUpcomingMovies">
<Parameters>
<Parameter Name="month">
<DefaultValue>12</DefaultValue>
</Parameter>
<Parameter Name="year">
<DefaultValue>2007</DefaultValue>
</Parameter>
</Parameters>
</Method>
<ElementPath>RunQueryResponse{}/RunQueryResult{}/diffgram{}/DataSetName/TableName</xmldp:ElementPath>
</Query>


I am getting an error: The XmlDP query is invalid. (Microsoft Report Designer)


Any help? I am trying to figure out this simple example so I can apply it to my own webservice.

Thanks