Filter textinput in textfields in Actionscript 3.0

Filter textinput in textfields in Actionscript 3.0

acceptedRegEx = "^[0-9]{0,3}[\.,]?[0-9]{0,2}$";

...

input.addEventListener(TextEvent.TEXT_INPUT, handleTextInput, false, 0, true);

...

private function handleTextInput(event:TextEvent):void {
  var newText:String;
			
  newText = input.text.substr(0, input.selectionBeginIndex) + event.text + input.text.substr(input.selectionEndIndex);

  if(acceptedRegEx != "" && !(new RegExp(acceptedRegEx).test(newText)))
  event.preventDefault();
}