import mx.formatters.*;
public function formatThis(plainText:String):String
{
var fmtPhone:PhoneFormatter = new PhoneFormatter();
var formattedString:String = fmtPhone.format(plainText);
if(fmtPhone.error == "Invalid value")
{
mx.controls.Alert.show('invalid.');
}else if(fmtPhone.error == "Invalid format"){
mx.controls.Alert.show('invalid.');
}
return(formattedString);
}