<?xml version="1.0" encoding="utf-8"?>
  <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
          layout="vertical"
          creationComplete="initApp()">
          
          <mx:Script>
                  <![CDATA[
                          private var mealsXML:XML = new XML();
  
                          [Bindable]
                          private var theXMLasString:String;
                          
                          [Bindable]
                          private var theOutput:String;
                          
                          private function doFill():void
                          {
                                  switch(theList.selectedItem.data)
                                  {
                                          case 1:
                                                  theOutput = mealsXML.serving[1];
                                                  break;
                                          case 2:
                                                  theOutput= mealsXML.serving[2].hearty.meat;
                                                  break;
                                          case 3:
                                                  theOutput= mealsXML.serving.lite.(meat=='turkey');
                                                  break;
                                          case 4:
                                                  theOutput= mealsXML.serving.hearty.(@cost == 9.95);
                                                  break;
                                          case 5:
                                                  theOutput= mealsXML.serving.(@time == 'lunch');
                                                  break;
                                          case 6:
                                                  theOutput= mealsXML.serving.hearty.(@cost == 9.95).(meat=='pastrami');
                                                  break;
                                          case 7:
                                                  theOutput= mealsXML..lite;
                                                  break;
                                          case 8:
                                                  theOutput= mealsXML..lite.(@cost > 6);
                                                  break;
                                          case 9:
                                                  mealsXML.serving[0].lite.@cost='100';
                                                  theOutput= mealsXML.serving[0].lite.(@cost=='100');
                                                  break;
                                          case 10:
                                                  mealsXML.serving[0].lite.meat='turkey bacon'
                                                  theOutput= mealsXML.serving[0].lite.(meat=='turkey bacon');                                                
                                                  break;
                                  }
                          }
                          
                          
                          private function initApp():void
                          {
                                  mealsXML=
                                  <meals>
                                          <serving time="breakfast">
                                                  <lite cost="5.95">
                                                          <meat>turkey</meat>
                                                          <waffle>plain</waffle>
                                                  </lite>
                                                  <hearty cost="9.95">
                                                          <meat>bacon and sausage</meat>
                                                          <waffle>blueberry</waffle>
                                                  </hearty>
                                          </serving>
                                          <serving time="lunch">
                                                  <lite cost="7.95">
                                                          <meat>turkey</meat>
                                                          <sandwich>mustard only</sandwich>
                                                  </lite>
                                                  <hearty cost="9.95">
                                                          <meat>pastrami</meat>
                                                          <sandwich>triple-decker</sandwich>
                                                  </hearty>
                                          </serving>
                                          <serving time="dinner">
                                                  <lite cost="12.95">
                                                          <meat>chicken breast</meat>
                                                          <side>steamed veggies</side>
                                                  </lite>
                                                  <hearty cost="14.95">
                                                          <meat>t-bone</meat>
                                                          <side>garlic mashed potatos</side>
                                                  </hearty>
                                          </serving>
                                  </meals>;
                                  
                                  theXMLasString=mealsXML.toString();
                          }
                          
                  ]]>
          </mx:Script>
          
  
                  
          <mx:ComboBox id="theList" change="doFill()">
                  <mx:dataProvider>
                          <mx:Array>
                                  <mx:Object label="--------" />
                                  <mx:Object label="mealsXML.serving[1]" data="1" />
                                  <mx:Object label="mealsXML.serving[2].hearty.meat" data="2"/>
                                  <mx:Object label="mealsXML.serving.lite.(meat=='turkey')" data="3"/>
                                  <mx:Object label="mealsXML.serving.hearty.(@cost == 9.95)" data="4"/>
                                  <mx:Object label="mealsXML.serving.(@time == 'lunch')" data="5"/>
                                  <mx:Object label="mealsXML.serving.hearty.(@cost == 9.95).(meat=='pastrami')" data="6"/>
                                  <mx:Object label="mealsXML..lite" data="7"/>
                                  <mx:Object label="mealsXML..lite.(@cost > 6)" data="8"/>
                                  <mx:Object label="mealsXML.serving[0].lite.@cost='100'" data="9"/>
                                  <mx:Object label="mealsXML.serving[0].lite.meat='turkey bacon'" data="10"/>
                          </mx:Array>
                  </mx:dataProvider>
          </mx:ComboBox>
          
          <mx:HBox height="95%" width="100%">
                  <mx:TextArea height="95%" width="50%" text="{theXMLasString}" />
                  <mx:TextArea height="95%" width="50%" text="{theOutput}" />                
          </mx:HBox>
          
  </mx:Application>