Watching Tutorial - Basic View App - profile and user notes

Source Code:
UserProfile.mxml

<?xml version="1.0" encoding="utf-8"?>
<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
  xmlns:s="library://ns.adobe.com/flex/spark" title="Cool Person Profile">
 
 <fx:Script>
  <![CDATA[
   protected function button1_clickHandler(event:MouseEvent):void
   {
    // TODO Auto-generated method stub
    navigator.pushView(views.UserNotes, {personName:personaName.text});
   }
  ]]>
 </fx:Script>
 
 <fx:Declarations>
  <!-- Place non-visual elements (e.g., services, value objects) here -->
 </fx:Declarations>
 <s:Label id="personName" x="10" y="51" fontSize="24" text="{data.name}"/>
 <s:TextArea id="jobDescription" x="10" y="82" height="120" text="{data.job}"/>
 <s:Button x="10" y="210" label="Add notes" click="button1_clickHandler(event)"/>
</s:View>