How to customize adwords conversion code for checkout values

Code: Select all

<!-- Google Code for Purchase Conversion Page -->
	<script type="text/javascript">
	/* <![CDATA[ */
	var google_conversion_id = 1234567890;
	var google_conversion_language = "en_US";
	var google_conversion_format = "1";
	var google_conversion_color = "666666";
	var google_conversion_label = "xxx-XXx1xXXX123X1xX";
	var google_conversion_value = 1;
	if (<? echo $totalValue ?>) {
		var google_conversion_value = <? echo $totalValue ?>
		var google_conversion_currency = <? echo $currency ?>
	}
	var google_conversion_currency = "USD";
	/* ]]> */ 
	</script>
	<script type="text/javascript"
	src="//www.googleadservices.com/pagead/conversion.js">
	</script>
	<noscript>
	<img height=1 width=1 border=0
	src="//www.googleadservices.com/pagead/
	conversion/1234567890/?value=
	<? echo $totalValue ?>&conversion_currency=<? echo $currency ?>
	&label=Purchase&script=0">
	</noscript>