Why wont my Boss cast spells?

[controlsx2]

I have a level 40 boss here is the script i made him,

function EldaraBoss_OnCombat(pUnit, Event)
pUnit:SendChatMessage(14, 0, "So you care to Defeat Me?")
pUnit:RegisterEvent("EldaraBoss_90", 100, 0)
end

function EldaraBoss_OnLeaveCombat(pUnit, Event)
pUnit:RemoveEvents()
end

function EldaraBoss_OnKillTarget(pUnit, Event)
pUnit:SendChatMessage(14, 0, "Ha, See you Pityful Fools, You will Never Defeat Me")
end

function EldaraBoss_OnDeath(pUnit, Event)
pUnit:RemoveEvents()
pUnit:SendChatMessage(14, 0, "NO! How can this be?!? I will be Back! You have Won!")
pUnit:SendChatMessage(14, 0, "For Now. . . .")
end

RegisterUnitEvent(10519, 1, "EldaraBoss_OnCombat")
RegisterUnitEvent(10519, 2, "EldaraBoss_OnLeaveCombat")
RegisterUnitEvent(10519, 3, "EldaraBoss_OnKillTarget")
RegisterUnitEvent(10519, 4, "EldaraBoss_OnDeath")

function EldaraBoss_90(pUnit, Event)
if pUnit:GetHealthPct() <= 90 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_75", 100, 0)
pUnit:SendChatMessage(14, 0, "Is that the best you got? Take this!")
pUnit:CastSpell(30413)
end
end

function EldaraBoss_75(pUnit, Event)
if pUnit:GetHealthPct() <= 75 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_50", 100, 0)
pUnit:SendChatMessage(14, 0, "Come on! We dont have all day!")
pUnit:CastSpell(53223)
end
end

function EldaraBoss_50(pUnit, Event)
if pUnit:GetHealthPct() <= 50 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_35", 100, 0)
pUnit:SendChatMessage(14, 0, "You Had Better Give your Tank Some Heals!")
pUnit:CastSpellOnTarget(48125, Unit:GetMainTank())
end
end

function EldaraBoss_35(pUnit, Event)
if pUnit:GetHealthPct() <= 35 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_15", 100, 0)
pUnit:SendChatMessage(14, 0, "Argh! Now your Starting to Annoy me!")
pUnit:CastSpell(34934)
pUnit:CastSpell(48142)


end
end

function EldaraBoss_15(pUnit, Event)
if pUnit:GetHealthPct() <= 15 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_7", 100, 0)
pUnit:RegisterEvent("EldaraBoss_En", 60, 4)
pUnit:SendChatMessage(14, 0, "Now i mean Buisness")
pUnit:CastSpell(42705)
end
end

function EldaraBoss_En(pUnit, Event)
pUnit:CastSpell(42705)
end

function EldaraBoss_7(pUnit, Event)
if pUnit:GetHealthPct() <= 4 then
pUnit:RemoveEvents()
pUnit:RegisterEvent("EldaraBoss_En", 100, 5)
end
end

Hes doing the enrage but he wont do the AoE's liek Typhoon, Shadowfury or Volley hes also not doing the Shadow Word pain, is it because the boss level is lower than level of spells or is it something elsE?

[stoneharry]

Use FullCast not Cast. You'd be suprised how much that fixes.
Also to cast a spell on a player it's pUnit:FullCastSpell(id, pUnit:GetRandomPlayer(0))
You can change the syntex on what he casts on by looking up a guide.

[controlsx2]

It was full cast i changed it to just Cast to see if that would change anything
and there not spells to cast on players there AoE's like Shadowfury

[stoneharry]

Check to see if the spells work in game by you casting them and if your getting any errors on script startup / in console on the phases.
Also on phases, give it at least a second.
pUnit:RegisterEvent("EldaraBoss_En", 60, 4) 60 = should be 60000 for 60 seconds. 60 will just crash it / make it not do anything