progress bar

[0o_o0]

now, i am trying to do progress bar during upload.
why is the percetage of my complete upload is only 2%?
how to make it 100%??:confused:
it is problem with my timer?

this is the coding about my progress bar-->

private function init():void {
timer = new Timer(1);
timer.addEventListener(TimerEvent.TIMER, timer_timer);
}

private function timer_timer(evt:TimerEvent):void {
progressBar.setProgress(progressBar.value + 5, 100);
}