Selecting One Particular Data Item from XML

I've followed the Flex in a week example, with th开发者_如何学JAVAe drop down menu that pairs the XML data to the XML node set.

For the project I am creating, I am just pulling through ONE XML file containing just one node into my application.

So my question is, How do I achieve this?

I am using HTTPService and pulling the data through, but at present the only way for this to work is by using the <s:DropDownList>

My code is as follows :

 <fx:Declarations>
  <!-- Place non-visual elements (e.g., services, value objects) here -->

  <s:HTTPService id="channelList" 
        url="http://www.spriing.dev/videolist/createxml.php" 
        showBusyCursor="true">
  </s:HTTPService>

 </fx:Declarations>
  <s:Group>
   <mx:Image id="backgroundImg" source="{channelSelection.selectedItem.background_image}" width="100%" height="100%" scaleContent="true"/>
  </s:Group>

  <s:Group>
   <mx:FormItem label="Select Your Channel : ">

    <s:DropDownList id="channelSelection" dataProvider="{channelList.lastResult.channels.channel}" labelField="name"  width="196"/>

   </mx:FormItem>

   <s:Label text="{channelSelection.selectedItem.name}"  x="0" y="45" width="331"/>

   <s:Label text="{channelSelection.selectedItem.description}"  x="0" y="72" width="331"/>

   <mx:Image source="{channelSelection.selectedItem.logo}" x="2" y="95" />

</s:Group>

Many Thanks in advance..

Bind them to the original source (the HTTPService) by replacing channelSelection.selectedItem with channelList.lastResult.channels.channel

<s:Group>
    <mx:Image id="backgroundImg" width="100%" height="100%" scaleContent="true"
       source="channelList.lastResult.channels.channel.background_image}" />
</s:Group>
<s:Group>

    <s:Label text="{channelList.lastResult.channels.channel.name}"  
        x="0" y="45" width="331"/>

    <s:Label text="{channelList.lastResult.channels.channel.description}"  
        x="0" y="72" width="331"/>

    <mx:Image source="{channelList.lastResult.channels.channel.logo}" x="2" y="95" />

</s:Group>