Checkout Success Tracking Tag

I have this code I have entered on my tpl_footer.php file..

<SCRIPT language='javascript'> var EventName = "Sale"; var EventAmount = <?php echo $order_summary['order_total']; ?>; var EventProfit = ""; var EventOrderNumber = <?php echo $order_summary['order_number']; ?>; var EventProductName = ""; var EventCurrency = "GBP"; EventParametersString = ""; var _rrnd = Math.random(); var str; var res; str = (document.location.href.indexOf("https") == 0) ? "https" : "http"; res = "<s"+"cript language='javas"+"cript'>jsv=10;UserID=3252;<\/s"+"cript><s"+"cript language='JavaS"+"cript1.1'>jsv=11;<\/s"+"cript><s"+"cript language='JavaS"+"cript1.2'>jsv=12;<\/s"+"cript><s"+"cript language='JavaS"+"cript1.3'>jsv=13;<\/s"+"cript>"; res += "<s"+"cript language='javas"+"cript' src='" + str + ":\/\/tracker.roitesting.com\/roitracker2.js'><\/s"+"cript>"; document.write(res); </SCRIPT>

I have entered the two variables for the Event Amount and Order number, as you can see, but everytime I go through checkout, and then check the source code, the variables or amounts never show up.

Am I doing it correctly?

dgent:

I have entered the two variables for the Event Amount and Order number, as you can see...

Am I doing it correctly?
Yes, the code looks right. Where did you put the file? Does the javascript show up on the page at all?

Hi dgent,

Why did you enter it to the Footer (viewable on each/every page) rather than the ZC confirmation page AFTER a successful sale?

Has it worked for you to just add it to the Footer?