Passing arguments from mouse event function

1

I would like to pass an argument (Number) from my mouse event to my function.
something like below, but it`s not working (OBVIOUSLY).



my_mc.addEventListener(MouseEvent.CLICK,myfunction(1));

function myfunction(num:Number){

	trace("myfunction: " + num);

}

how can I achieve this with AS 3.0?

Thank you.