Cannot parse Yahoo search results XML

Question

I am trying to create an application that will query yahoo and return XML to parse and display on the screen. For some reason I cannot parse the XML. I have done it this way before, but for some reason it is not working now. Does anyone have any idea how to get this to work?
When I debug the data I can see the XML values in the searchXML object, but I cannot retrieve them. I have attached the XML that is returned. It appears to be messing up with I copy and paste it from IE into a file.
Also I have removed my appId from this application.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    <mx:Script>
    <![CDATA[
    import mx.rpc.events.ResultEvent;
    import mx.core.IUIComponent;
    import mx.collections.XMLListCollection;
    [Bindable]
    private var searchURL:String = "";
    [Bindable]
    private var searchXML:XML = new XML();
    private function send_data():void
        searchURL ="http://boss.yahooapis.com/ysearch/web/v1/"+searchTerm.text+"?appid=APPID&format=xml";
        var str:String = searchURL;
        userRequest.send();
    private function resultHandler(event:ResultEvent):void
        searchXML = event.result as XML;
        dgUserRequest.dataProvider =searchXML.resultset_web;
    ]]>
    </mx:Script>
    <mx:HTTPService id="userRequest" url="{searchURL}" method="POST" result="resultHandler(event)" resultFormat="e4x"/>
    <!--http://boss.yahooapis.com/ysearch/web/v1/foo?appid=ApPID&format=xml-->
    <mx:VBox>
        <mx:Label text="Enter Search Term" />
        <mx:TextInput id="searchTerm" />
        <mx:Button id="submit" label="Submit" click="send_data()"/>
        <mx:Label text="{searchURL}"/>
        <mx:Label id="thislabel" text="{searchXML.@responsecode}"/>
        <mx:Label text="{searchXML.resultset_web.@count}"/>
        <mx:DataGrid id="dgUserRequest" >
            <mx:columns>
                <mx:DataGridColumn dataField="abstract" headerText="About" width="300"/>
                <mx:DataGridColumn dataField="clickurl" headerText="URL" width="300"/>
            </mx:columns>
        </mx:DataGrid>
    </mx:VBox>
    </mx:Application>

Answer 1

Thanks for your help, but I have found a much easier way to do what I was trying to do. Yahoo comes with a search API built specifically for Flex http://developer.yahoo.com/flash/tutorials/as3/search.html