How can I correctly write the WHERE clause?

I have an XML file that is structured as follows:

<root>
   <State state="AZ" stateName="Arizona" stateKey="Arizona" >
      <menuVirtualPageName>Arizona.html</menuVirtualPageName>
      <Region regionKey="GreaterPhoenix" >
         <pageName>Phoenix.html</pageName>
      </Region>
   </State>
</root>

I have been trying to select a state, using a regionKey value. Given that I already have a correct value for "thisState", I write the following Linq query

Dim stateQuery = (From dataStates In dataStatesXML...<Region> Where dataStatesXML...<State>.@stateKey = thisState Select New With {.virtualPageName = dataStates.<menuVirtualPageName>.Value.ToString(), .stateName = dataStates.@stateName.ToString()})

But I always get back an empty query result :( Any ideas or suggestions much appreciated!!!