Adding Affiliate Tracking Pixel In Marketpress

I have a generic tracking pixel script that I place on the confirmation page of my MarketPress Lite Shopping Cart. I am unsure of how to enter the variables to capture the Order Number and the Order Amount. The affiliate program I use is iDevAffiliate.

Here is the generic tracking pixel script:

<img border=”0″ src=”https://affiliates.mysite.com/affiliate/sale.php?profile=72198&idev_saleamt=XXX&idev_ordernum=XXX&#8221; width=”1″ height=”1″>

I need to replace XXX and YYY with the correct variables. Any assistance will be greatly appreciated.

Thank you.