longer login time?

[dexters]

i still have an old problem and i used the search.

i want a longer login time for the users.

 

session is stored in database.

i changed includes/function/session.php

 

if (STORE_SESSIONS == 'mysql') {
if (!$SESS_LIFE = get_cfg_var('session.gc_maxlifetime')) {
$SESS_LIFE = 144000;
}

 

but it does not work out...

[dexters]

is there a nother place where i can look for a longer login time?