Need a fix for this script

[Arugos]

After some try i changed a few things and now it look like that
but again i still get an error!I hope that one is easyer to fix tho , could someone tell me what to change if i get this error : calling 'RegisterEvent' on bad self <Unit Expected, got table>

function Onyxia_Firenova(Unit)
Unit:CastSpell(37371)
end
function Onyxia_Coneoffire(Unit)
Unit:CastSpell(36876)
end
function Onyxia_Fieryblast(Unit)
Unit:CastSpell(38382)
end
function Onyxia_Thickskin(Unit)
Unit:CastSpell(43823)
end
function Onyxia_Burningwish(Unit)
Unit:CastSpell(18789)
end
function Onyxia_Burningrage(Unit)
Unit:CastSpell(38771)
end
function Onyxia_OnCombat(Unit, Event)
Unit:SendChatMessage (11, 0, "You killed me once,now i am back and i wont let it happen again!")
end
function Onyxia_OnKill(Unit, event)
Unit:SendChatMessage(12,0,"You gonna fail!")
end
function Onyxia_OnDied(Unit)
Unit:SendChatMessage(12,0,"No....not again!!!")
Unit:RemoveEvents()
end
function Onyxia_OnLeaveCombat(Unit)
Unit:SendChatMessage(12,0,"I will be waiting...!")
Unit:RemoveEvents()
end
Unit:RegisterEvent("Onyxia_Firenova",50000, 0)
Unit:RegisterEvent("Onyxia_Coneoffire",30000, 0)
Unit:RegisterEvent("Onyxia_Fieryblast",25000, 0)
Unit:RegisterEvent("Onyxia_Thickskin",500, 0)
Unit:RegisterEvent("Onyxia_Burningwish",40000, 0)
Unit:RegisterEvent("Onyxia_Burningrage",25000, 0)
RegisterUnitEvent(111112, 1,"Onyxia_OnCombat")
RegisterUnitEvent(111112, 3,"Onyxia_OnKill")
RegisterUnitEvent(111112, 4,"Onyxia_OnDied")
RegisterUnitEvent(111112, 2,"Onyxia_OnLeaveCombat")

[Arugos]

Nvm i fixed my prob with help from none because none really helped..