Styling a dynamic text field

Hi guys

I am having a problem styling a dynamic text (see code below) as the font and font size are not working on our movie.

Can you spot, what we could be doing wrong?

Thanks in advance
Andres

     
var count:Number = 10082145;
var maxNum:Number = 20082145;
var num:Number = 1;
this.createTextField("txt", this.getNextHighestDepth(), 900, 20, 100, 50) ;
txt.textColor = 0xFFFFFF;
var emphatic:TextFormat = new TextFormat();
emphatic.bold = true;
emphatic.size = 16;
emphatic.font = "Arial";
txt.setTextFormat(emphatic);

onEnterFrame = function () {
    count += num;
    if (count >= maxNum) {
        num = 0;
        txt.text = "20082145";
    } else {
        var v = count / (maxNum / 20082145);
        txt.text = v;
       
        var str = String(v);
        var io = str.indexOf('.');
        if (io == -1)
        {
            txt.text = v + '0';
        }
    }

   
};