Не парсится XML сгенерированный .NET сервисом

[etc]

var xml:XML = <HappyTree xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">
  <Nodes>
    <HappyMessage xsi:type="HappyTreeNode">
      <Id>1</Id>
      <FromName>some name</FromName>
      <FromEMail>from@domain.ru</FromEMail>
      <ToName>some nnammmee</ToName>

      <ToEMail>from@domain.ru</ToEMail>
      <Message>хуяк маяк</Message>
      <DateTime>2008-02-15T15:45:43</DateTime>
      <GUID>adsj1237asdkjh</GUID>
      <Type>pink</Type>
      <IsApproved>true</IsApproved>

    </HappyMessage>
    <HappyMessage xsi:type="HappyTreeNode">
      <Id>3</Id>
      <FromName>some name</FromName>
      <FromEMail>from@domain.ru</FromEMail>
      <ToName>some nnammmee</ToName>
      <ToEMail>from@domain.ru</ToEMail>

      <Message>хуяк маяк</Message>
      <DateTime>2008-02-15T16:28:28</DateTime>
      <GUID>adsj1237asghjgddkjh</GUID>
      <Type>pink</Type>
      <IsApproved>true</IsApproved>
    </HappyMessage>
  </Nodes>
</HappyTree>;
var xsi:Namespace = xml.namespace('xsi');
var ns:Namespace = xml.namespace();
trace(xml..ns::HappyMessage[0].@xsi::type.toXMLString());