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Validating a data model using the validate() method

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">     <mx:Script>                      import mx.controls.Alert;             import mx.events.ValidationResultEvent;             import mx.validators.PhoneNumberValidator;                          private var phoneV:PhoneNumberValidator;             private var phoneVResult:ValidationResultEvent;             private var nameVResult:ValidationResultEvent;             private function doValidate():void             {                 phoneV = new PhoneNumberValidator();                 phoneV.source = myModel;                 phoneV.property = "phone";                 phoneV.listener=phoneTxt;                 phoneV.required = true;                 phoneV.allowedFormatChars = "+,-";                 phoneV.invalidCharError = "Insert valid chars";                 phoneV.wrongLengthError = "The number is too short or too long";                 phoneV.requiredFieldError = "This input is required";                 phoneVResult = phoneV.validate();                                  if(phoneVResult.type==ValidationResultEvent.VALID)                   {                     Alert.show("Validated!", "Validation Message", 4);                                          }  else if(phoneVResult.type==ValidationResultEvent.INVALID)                  {                     Alert.show("NOT validated !", "Validation Message", 4);                 }             }                </mx:Script>     <mx:Model id="myModel">          <root>          <name>{nameTxt.text}</name>          <surname>{surnameTxt.text}</surname>          <phone>{phoneTxt.text}</phone>          </root>     </mx:Model>     <mx:Form id="myForm">         <mx:HBox>                        <mx:TextInput id="nameTxt"  />             <mx:Label id="myLbl" text="" visible="false" />         </mx:HBox>         <mx:FormItem label="Insert Surname">             <mx:TextInput id="surnameTxt" />         </mx:FormItem>         <mx:FormItem label="Insert Phone Number">             <mx:TextInput id="phoneTxt" />         </mx:FormItem>              </mx:Form>          <mx:Button label="Validate" click="doValidate();" x="284" y="172"/>               </mx:Application>