Only time is a reserved variable.
Time script:
#top
@((_time mod 300 < 5) or (stoptimer))
?stoptimer:goto "stopped"
_temptime = _time
TitleText [format ["Elapsed Time: %1 Min", (_temptime - _temptime mod 60)/60], "PLAIN DOWN", 2]
@(_time > _temptime + 5) or stoptimer
TitleText ["", "PLAIN DOWN", 1]
?stoptimer:goto "stopped"
goto "top"
#stopped
_Temptime = _time
TitleText [format ["Total Elapsed Time: %1 Min, %2 Sec", (_temptime - _temptime mod 60)/60, (_temptime mod 60) - ((temptime mod 60)mod 1)]
exit