Jquery ajax success function returns null?

[eluser]explorercode[/eluser]
@BrianJM I really appreciate your help. This thing is driving me crazy,.. I feel all the pieces and parts are in place, but I am still getting null. So, I am using the REST_Controller API posted by Philip Sturgeon in nettusplus - working-with-restful-services-in-codeigniter-2 article
In this model when you include the /format/json at the end of the api url, it already encodes it with json_encode for you, so my controller doesn't have to do that. I wish I would post the API URL here so you see the results I get on the browser for the results... here it is -> my-domain-list.com / api / index.php/ whoisapi/ domain/ id/testingapi/format/json
the whoisapi class has a method called domain_get() which translates into the domain method with a get type by the REST_Controller.