kevin needs help

kevinneedshelp.js

var kevin = function(error, result) {
   if (error) {
      console.error(error);
  } else {
    console.log(result);
  };
};

var kevinNeedsHelp = client.performAimTransaction({
    "x_type": "AUTH_CAPTURE",
    "x_method": "CC",
    "x_card_num": "4111111111111111",
    "x_exp_date": "0115",
    "x_amount": "19.99",
    "x_description": "Sample Transaction",
    "x_first_name": "John",
    "x_last_name": "Doe",
    "x_address": "1234 Street",
    "x_state": "WA",
    "x_zip": "98004"
});

kevinNeedsHelp.on('success', function(error, result){
      kevin(error, result);
});

kevinNeedsHelp.on('failure', function(error, result){
     kevin(error, result);
});