Adding Shopper Approved code, what is the names of these auto populated fields?

I am adding the Shopper Approved survey questionnaire to my checkout success page and it was suggested to me that I allow it to auto populate these three fields. Can someone help me get the proper names so it works correct the first time a customer fills out the questionnaire?

Order I
Name
Email

I cut a section..

<script type="text/javascript"> var sa_values = { 'site':14114, 'orderid':'ORDER123', 'name':'John Doe', 'email':'john.doeATemailDOTcom', 'forcecomments':1 };  function saLoadScript(src) { var js = window.document.createElement("script"); js.src = src; js.type = "text/javascript"; document.getElementsByTagName("head")[0].appendChild(js); } var d = new Date(); if (d.getTime() - 172800000 > 1424969681000) saLoadScript("//www.shopperapproved.com/thankyou/rate/12345.js"); else saLoadScript("//direct.shopperapproved.com/thankyou/rate/12345.js?d=" + d.getTime()); </script>

On checkout_success, you can use:

$orders->fields['orders_id']
$orders->fields['customers_name']
$orders->fields['customers_email_address']