removeEventListener not working

Found the solution here:

http://stackoverflow.com/questions/13486230/to-pass-a-parameter-to-event-listener-in-as3-the-simple-way-does-it-exist/13488640#13488640

//you can pass parameter to the function this way:

stage.addEventListener(MouseEvent.CLICK, onClick(true, 123, 4.56, "string"));

function onClick(b:Boolean, i:int, n:Number, s:String):Function {

  return function(e:MouseEvent):void {

    trace("Received " + b + ", " + i + ", " + n + " and " + s + ".");

  };

}

//But to be able to remove the listener you store the function in a variable that is a function = the function call in the listener.

//then call that function in the listener.

var functionOnClick:Function = onClick(true, 123, 4.56, "string");

stage.addEventListener(MouseEvent.CLICK, functionOnClick);

function onClick(b:Boolean, i:int, n:Number, s:String):Function {

  return function(e:MouseEvent):void {

    trace("Received " + b + ", " + i + ", " + n + " and " + s + ".");

  };

}

trace("Before: " + stage.hasEventListener(MouseEvent.CLICK));

stage.removeEventListener(MouseEvent.CLICK, functionOnClick);

trace("After: " + stage.hasEventListener(MouseEvent.CLICK));