Problem with acceleromter example in Blackberry Tablet Application with Flex 4.5

Hello,

I am new to Flex and Flash Builder and acquired the book as an introduction to this new environment. I created a mobile flex project in Flash Builder 4.6 and copied the text from pages 47 and 48 of the publication and I am getting 1 error and 1 warning. The error is 1026: Constructor Functions must be instance methods and this relates to the line private var accelerometer:Accelerometer; and the warning 'Access of undefined property toTimeString' relates to the line info.text = "Updated: " + new Date().toTimeString + "\n\n"

The complete code is as follows:

<?xml version="1.0" encoding="utf-8"?>
<s:Application 	xmlns:fx="http://ns.adobe.com/mxml/2009" 
		xmlns:s="library://ns.adobe.com/flex/spark"
		applicationComplete="application1_applicationCompleteHandler(event)">
	<fx:Script>
		<![CDATA[
			
			import flash.sensors.Accelerometer;
			
			import mx.events.FlexEvent;
			
			private var accelerometer:Accelerometer;
			
			protected function application1_applicationCompleteHandler(event:FlexEvent):void
			{
				if (Accelerometer.isSupported==true)
				{	
					accelerometer = new Accelerometer();
					accelerometer.addEventListener(AccelerometerEvent.UPDATE,handleUpdate);
				}
				else
				{
					status.text = "Accelerometer Not Supported";
				}
			}
			
			private function handleUpdate(event:AccelerometerEvent):void
			{
				info.text = "Updated: " + new Date().toTimeString + "\n\n"
				+ "acceleration X: " + event.accelerationX + "\n" 
				+ "acceleration Y: " + event.accelerationY + "\n" 
				+ "acceleration Z: " + event.accelerationZ;
			}
		]]>
	</fx:Script>
	
	<fx:Declarations>
		<!-- Place non-visual elements (e.g., services, value objects) here -->
	</fx:Declarations>
	
	<s:Label id="status" text="Gently Shake the Device" top="10" width="100%" textAlign="center"/>
	<s:TextArea id="info" width="100%" height="200" top="40" editable="false"/>
	
</s:Application>

Can somebody please advise why I am getting these problems?

many thanks in advance,

Bob