Change time that notification window appears

How can i change the time that the notification window ( see screenshot ) appears in the corner of the site?
I tried to adjust the settings in administration --> modules --> spy but that has no effect. 

Anyone an idea?

I'm not sure if that is it, since design on the screenshot is very different, but try to change the following in inc/classes/BxDolMemberMenu.php file near ~101 line number:

        var $iNotifyDestroyTime  = 3000; // in milliseconds;