Extending Vtiger 7.1 inactivity time

I have tried the various suggestions to extending the inactivity time in V7.1 using the suggestion in the following V.6 thread to no avail (couldn't find any good documentation for V.7). This thread really summarized the frustration with this issue.

https://discussions.vtiger.com/discussion/171525/extending-vtiger-6-inactivity-time

These are my settings that do not work extending the V7.1 activity time. Suggestions?

Set

/include/webservices/sessionmanager.php file:

$maxWebServiceSessionLifeSpan = 43200; //Max life span of a session is 12 hours. $maxWebServiceSessionIdleTime = 36000; // 10 Hours - Max life span session should be kept alive after the last transaction.

In file vtiger/libraries/HTTP_Session/Session.php find this function

function function start(){ } within this function session_start() -- is written . Before this function add the following -

session_save_path('PATH_TO_SAVE_SESSION_DATA'); ini_set('session.gc_maxlifetime', 106060); // 10 hours ini_set('session.gc_probability', 1); ini_set('session.gc_divisor', 100); ini_set('session.cookie_secure', FALSE); ini_set('session.use_only_cookies', TRUE); session_start();