What's wrong with my Dynamic text?

1

Below is the code i have used to make a bytes loaded and bytes total for a loading sequence but the text does not appear at all?? if anyone know’s what i’m doing wrong i would greatly appreciate their help.

bytes_loaded = Math.round(this.getBytesLoaded());
bytes_total = Math.round(this.getBytesTotal());
if (bytes_loaded == bytes_total) {
gotoAndStop(3);
}
this.loaded_txt = (bytes_loaded)
this.total_txt = (bytes_total)

thanks guys.