FreeSwitch - It doesn't connect MySQL database using xml_mod_curl - freeswitch

Question

After install FreeSwitch, I tried to connect user account using xml_mod_curl. I followed below instruction to connect MySQL database.
http://saevolgo.blogspot.kr/2012/07/freeswitch-with-sip-users-in-mysql-mod.html
I could see that it actually read XML to sign in SIP account with 1000-1019 username. However, it doesn't look like it connects MySQL database. I failed to sign in new user and new password that is saved in MySQL column.
here is global_defines.php
if (basename($_SERVER['PHP_SELF']) == basename(__FILE__)) {
header('Location: index.php');
}
/**
* Defines the default dsn for the FS_PDO class
*/
define('DEFAULT_DSN', 'mysql:dbname=FS_DB;host=127.0.0.1');
/**
* Defines the default dsn login for the PDO class
*/
define('DEFAULT_DSN_LOGIN', 'root');
/**
* Defines the default dsn password for the PDOclass
*/
define('DEFAULT_DSN_PASSWORD', 'mypassword');
/**
* Generic return success
*/
define('FS_CURL_SUCCESS', 0);
/**
* Generic return success
*/
define('FS_SQL_SUCCESS', '00000');
/**
* Generic return warning
*/
define('FS_CURL_WARNING', 1);
/**
* Generic return critical
*/
define('FS_CURL_CRITICAL', 2);
/**
* determines how the error handler handles warnings
*/
define('RETURN_ON_WARN', true);
/**
* Determines whether or not users should be domain specific
* If GLOBAL_USERS is true, user info will be returned for whatever
* domain is passed.....
* NOTE: using a1 hashes will NOT work with this setting
*/
define('GLOBAL_USERS', false);
The instruction article was written 2 years ago. It seems like there should be one more option to turn on My-SQL connection. Did I missing something?