No more than a dot in numeric TextField.

I needed to limit the input of a numeric TextField to a single dot and not allow it to be the first char.
So after a while I solved my problem writing down this:

import flash.events.MouseEvent; import flash.text.TextFormatAlign; /* Create an instance of a TextField */  var inputField:TextField = new TextField();      /* Set text and properties */  inputField.text="0.5"; inputField.restrict = "0-9 ."; inputField.maxChars = 5;     inputField.type = "input"; inputField.width = inputField.width +5; inputField.height = inputField.textHeight +5;     inputField.x = (stage.stageWidth - inputField.width)/2;     inputField.y = (stage.stageHeight - inputField.height)/2; inputField.backgroundColor = 0x444444;  inputField.background = true;  /* Set other properties with TextFormat class */ var tF:TextFormat = new TextFormat(); tF.color = 0x9F9F9F; tF.bold=true;1 tF.size=15; tF.align = TextFormatAlign.CENTER; inputField.setTextFormat(tF) /* Make your textfield visible */  addChild(inputField);  /* Link the TextField to textInputHandler function */ inputField.addEventListener(Event.CHANGE, textInputHandler);  /* If first char is a dot or the string contains more than one dot. */  function textInputHandler (e:Event) { var string:String = e.target.text; var idx:int=string.indexOf("."); var last:String=string.substr(string.length-1,string.length); if (idx != -1) { if ((string.charAt(string.length - 1) == string.charAt(idx) && (string.length - 1) != idx) || (string == last)) { e.target.text = string.substr(0,string.length -1); }     } }