Send Transfer the result of an XmlPort via WebService

Hello Guys
I want your help concerning Xmlport and text.

The situation:
I have php and .Net client that want to check an item from navision. The client want the result to be in xml format.

Solution:
I decided to use XmlPort as it is quite straightforward and the response will be well formatted.

I have done this.

CreateItemXml(itemNo : Code[20];VAR Result : BigText)

Item.SETRANGE(Item."No.", itemNo);
IF Item.FINDFIRST THEN BEGIN
  XmlFile.CREATE('D:\XmlItem.xml');
  XmlFile.CREATEOUTSTREAM(XmlStream);
  XmlItem.SETDESTINATION(XmlStream);
  XmlItem.SETTABLEVIEW(Item);
  XmlItem.EXPORT();
  XmlFile.CLOSE();
END;

The result is as the client expected:
<?xml version="1.0" encoding="UTF-16"?>
<Response>
<Item><No>1110</No></Item>
</Response>



but my current solution is creating an xml file.
What i want is to get the text representation of the xmlport result and send it through my web service.

How can i either
1. convert the Outstream into Bigtext OR
2. get the text value of the Xml port. ???

I hope you have understand what i am trying to ask you guys..
See you with your answers...

Heveen