retrieve Data thru Php failed?

Hi, I want to retrieve a data from mysql database I have a field 'fname'  ( first name ), and I want an input box 'fnameS' in timeline to show it right from the beginning.

timeline script like this:

stop();

processCreate("retrieveData");

in my class document I have function like this:

public function processCreate(showCondition):void {

            trace ("get it");    //tested 'get it' shows in output

            var urlVars:URLVariables = new URLVariables();

            var urlFileRequest:URLRequest = new URLRequest("php/controlpanel.php");

            urlFileRequest.method = URLRequestMethod.POST;

            urlFileRequest.data = urlVars;

            var php2Loader:URLLoader = new URLLoader();

            php2Loader.dataFormat = URLLoaderDataFormat.VARIABLES;

            if (showCondition=="retrieveData"){

                php2Loader.addEventListener(Event.COMPLETE, showResultS2); }

            urlVars.systemCall = showCondition;

            urlVars.email = email.text;

            urlVars.password = password.text;

            urlVars.fname = fname.text;

            urlVars.lname = lname.text;

            php2Loader.load(urlFileRequest); }