<?xml version="1.0"?> 
  <!-- Simple example to demonstrate the RegExpValidator. -->
  <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
  
          <mx:Script>
                  <![CDATA[
                          import mx.events.ValidationResultEvent;
                          import mx.validators.*;
          
              // Write the results to the 
                          private function handleResult(eventObj:ValidationResultEvent):void {
                                  if (eventObj.type == ValidationResultEvent.VALID)
                                  {
                                          // For valid events, the results Array contains
                                          // RegExpValidationResult objects.
                                          var xResult:RegExpValidationResult;
                                          reResults.text="";
                                          for (var i:uint = 0; i < eventObj.results.length; i++)
                                          {
                                                  xResult = eventObj.results[i];
                                                  reResults.text=reResults.text + xResult.matchedIndex + " " +
                                                          xResult.matchedString + "\n";
                                          }
                                  }
                                  else
                                  {
                                          reResults.text="";                        
                                  }                
                          }
                  ]]>
          </mx:Script>
  
          <mx:RegExpValidator id="regExpV" 
                  source="{regex_text}" property="text" 
                  flags="g" expression="{regex.text}" 
                  valid="handleResult(event)" invalid="handleResult(event)"
                  trigger="{myButton}" triggerEvent="click"/>
          
     <mx:Panel title="RegExpValidator Example" width="95%" height="95%" 
          paddingTop="5" paddingLeft="5" paddingRight="5" paddingBottom="5">
     
          <mx:Text width="100%" text="Instructions:"/>
          <mx:Text width="100%" text="1. Enter text to search. By default, enter  a string containing the letters ABC in sequence followed by any digit."/>
          <mx:Text width="100%" text="2. Enter the regular expression. By default, enter ABC\d."/>
          <mx:Text width="100%" text="3. Click the Button control to trigger the validation."/>
          <mx:Text width="100%" text="4. The results show the index in the text where the matching pattern begins, and the matching pattern. "/>
     
          <mx:Form>
              <mx:FormItem label="Enter text: ">
                  <mx:TextInput id="regex_text" text="xxxxABC4xxx" width="100%"/>
              </mx:FormItem>
  
              <mx:FormItem label="Enter regular expression: ">
                  <mx:TextInput id="regex" text="ABC\d" width="100%"/>
              </mx:FormItem>
  
              <mx:FormItem label="Results: ">
                  <mx:TextInput id="reResults" width="100%"/>
              </mx:FormItem>
  
              <mx:FormItem >
                  <mx:Button id="myButton" label="Validate"/>
              </mx:FormItem>
          </mx:Form>
          </mx:Panel>
  </mx:Application>