that code doesn't specify anywhere the nick on the notify list.
on *:UNOTIFY: if ($nick == [color:red]mynick[/color]) nick $nick
Change the part in red and as the man said, don't forget to
/notify mynick.PS: downside of this code is that you won't be able to change from mynick to something else, and though it is possible to protect against that, it will take some doing.