Countdown GUI Help

I know this isn’t very elegant but I’m trying to get a countdown gui to show properly. Right now it works okay but when it gets down below 10 seconds in the seconds area it doesn’t show the 0. Example 09,08 and so on. Any ideas. I’ve been trying to get this straight the last couple of days. Thanks

$formForm_Load={
	$TotalTime = 300
	$script:StartTime = (Get-Date).AddSeconds($TotalTime)
	$timerUpdate.Start()
		
}


$timerUpdate_Tick = {
	
	[TimeSpan]$span = $script:StartTime - (Get-Date)
	
	$1 = $span.minutes
	$2 = $span.Seconds
	$formform.Text = $labelTime.Text = "$1 : $2"
	
	if ($span.TotalMinutes -le 0)
	{
		$timerUpdate.Stop()
	}
}

Instead of

$1 = $span.minutes
	$2 = $span.Seconds
	$formform.Text = $labelTime.Text = "$1 : $2"

Try just

$formform.Text = $labelTime.Text = $span.tostring("mm\:ss")

Thanks Michael. I appreciate it.