PHP SDK - Litle AVS Only Transaction

gistfile1.aw

<?php
require_once realpath(dirname(__FILE__)) . '/../lib/LitleOnline.php';

#AVS Only
$auth_info = array(
  'orderId' => '1',
  'id'=> '456',
  'amount' => '10010',
  'orderSource'=>'ecommerce',
  'billToAddress'=>array(
    'name' => 'John Smith',
    'addressLine1' => '1 Main St.',
    'city' => 'Burlington',
    'state' => 'MA',
    'zip' => '01803-3747',
    'country' => 'US'
  ),
  'card'=>array(
    'number' =>'4457010000000009',
    'expDate' => '0112',
    'cardValidationNum' => '349',
    'type' => 'VI'
  )
);

$initilaize = &new LitleOnlineRequest();
$avsResponse = $initilaize->authorizationRequest($auth_info);

#display results
echo ("Response: " . (XmlParser::getNode($avsResponse,'response')) . "<br>");
echo ("Message: " . XmlParser::getNode($avsResponse,'message') . "<br>");
echo ("Litle Transaction ID: " . XmlParser::getNode($avsResponse,'litleTxnId'));
echo ("AVS Result: " . XmlParser::getNode($avsResponse,'avsResult'));

Shouldn't amount be 0?