navigateToURL not working with Air for iOS

Hi,

  I have created a game in flash for iOS (iPad). The game works fine, but I am trying to call a URL on the click of a button.

There is no response on click.

Below is the code

externalcallButton.addEventListener(MouseEvent.CLICK, moregames)

private function moregames(e:MouseEvent){

     var urlReq = new URLRequest("www.example.com/iphonegames");

     navigateToURL(urlReq);

}