gdataxml read xml with namespaces

I am new to GDataXMLNode and xml namespaces.

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://ift.tt/sVJIaE" xmlns:xsi="http://ift.tt/ra1lAU" xmlns:xsd="http://ift.tt/tphNwY">
   <SOAP-ENV:Body>
      <ns1:StockDetails xmlns:ns1="urn:WinRetail:TestWebService">
         <ttStockDetail>
            <ttStockDetailRow>
               <iconname>Levels.png</iconname>
               <screenlabel>Inhand</screenlabel>
               <detail>Product Detail</detail>
            </ttStockDetailRow>
            <ttStockDetailRow>
               <iconname>Levels.png</iconname>
               <screenlabel>In transit</screenlabel>
               <detail>0</detail>
            </ttStockDetailRow>
         </ttStockDetail>
         <resultstring>OK</resultstring>
      </ns1:StockDetails >
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

How to parse this xml with namespaces using GDataXMLNode in Xcode? I don't want to use path. I want to get the element list in an array and then loop through it with a specific condition. I am unable to get the element list for 'StockDetails'.

Please help.