Make character disappear

I'm trying to have a NPC dissapear when he dies with the SetActorAlpha fonction but it does not seem to work is there or another? or can some tell me what is wrong with the script? --

begin OnDeath

set timer to timer + GetSecondsPassed

if timer == 1 saa 0.45 endif if timer == 2 saa 0.40 endif if timer == 3 saa 0.35 Message " As Fiy Rein's ghost disapears before you, you hear his voice in your head : 'Congratulations, you shall now bear my curse...' ", 12 endif if timer == 4 saa 0.30 endif if timer == 5 saa 0.25 endif if timer == 6 saa 0.20 endif if timer == 7 saa 0.15 endif if timer == 8 saa 0.10 endif if timer ==9 saa 0.5 endif if timer == 10 saa 0.0 endif if timer == 11 PlaceAtMe zzreinbrace Player.AddSpell zzreinsab ForceWeather Clear ReleaseWeatherOverride Disable zzFiyRein endif

end

-- --Hawkes 13:07, 12 April 2006 (EDT)