added timer for ex5
added timer for ex5

appfs/appfs,appfs/appfs,FirstSanny/appfs,FirstSanny/appfs,ray-chew/appfs,appfs/appfs,appfs/appfs,appfs/appfs,appfs/appfs,FirstSanny/appfs,FirstSanny/appfs,FirstSanny/appfs,FirstSanny/appfs,FirstSanny/appfs,appfs/appfs