Why dosent this work plz help i will +rep

[Summer]

Okey is im makeing some scripts for my server but i get this error thingy



Why ?

here my lua

function Primal_Phase1(Unit, event)
if Unit:GetHealthPct() < 95 then
Unit:RemoveEvents()
Unit:SendChatMessage(12, 0, "This has gone on long enough!")
Unit:SetModel(15214)
Unit:SetScale(3)
Unit:RegisterEvent("Primal_Stomp",8000, 0)
Unit:RegisterEvent("Primal_Phase2",1000, 0)
end
end

function Primal_Phase2(Unit, event)
if Unit:GetHealthPct() < 75 then
Unit:RemoveEvents()
Unit:SendChatMessage(12, 0, "Baah time to die!")
Unit:SetScale(5)
Unit:CastSpell(1557
Unit:RegisterEvent("Primal_volley2",8000, 0)
Unit:RegisterEvent("Primal_Phase3",1000, 0)
end
end

function Primal_Phase3(Unit, event)
if Unit:GetHealthPct() < 65 then
Unit:RemoveEvents()
Unit:SendChatMessage(12, 0, "Annoying Pests!")
Unit:SetScale(7)
Unit:RegisterEvent("Primal_Phase4",1000, 0)
end
end

function Primal_Phase4(Unit, event)
if Unit:GetHealthPct() <= 55 then
Unit:RemoveEvents()
Unit:SetScale(9)
Unit:CastSpell(1557
Unit:SendChatMessage(12, 0, "You shall all pay dearly!")
Unit:RegisterEvent("Primal_Stomp",8000, 0)
Unit:RegisterEvent("Primal_Phase5",1000, 0)
end
end

function Primal_Phase5(Unit, event)
if Unit:GetHealthPct() <= 40 then
Unit:RemoveEvents()
Unit:SendChatMessage(12, 0, "My powers! I cannot control them anymore!")
Unit:SetScale(11)
Unit:CastSpell(15496)
Unit:CastSpell(24255)
Unit:SpawnCreature(100259, x, y, z, o, 17, 0);
Unitespawn (1000, 0)
end
end

RegisterUnitEvent(100251, 1, "Primal_OnCombat")
RegisterUnitEvent(100251, 2, "Primal_OnLeaveCombat")
RegisterUnitEvent(100251, 3, "Primal_OnKilledTarget")
RegisterUnitEvent(100251, 4, "Primal_Death")

Thx for helping =)

[Power of Illuminati]

Beacuse you have no function that is named Primal_OnCombat, _OnLeaveCombat, _OnKilledTarget and _Death (Primal before every _, just to lazy to write)

[SectorSeven]

Your regestered the wrong events

RegisterUnitEvent(100251, 1, "Primal_Phase1")
RegisterUnitEvent(100251, 2, "Prima_Phase2")
ect...

[Summer]

Ah hehe thx