Sorcerers Ultimate Combo - Need a fix

--[[
    Sorcerer Ultimate Combo for ArchlightOnline
    Version 1.5
    By Mr Trala
]]

-- Configs

local runeid = 3154 -- Id of InfiSD (so you can combo)
local dist = 7 -- Max Distance to combo
local mana = 500 -- Min mana to try combo

-- Exaus (ot servers) -- Don't touch if you don't know what are those for.
local spell1 = "exura dis"
local spell2 = "exevo dis flam hur"
local spell3 = "exevo vis hur"
local spell4 = "utori san"
local spell5 = "exevo gran mas vis"
local spell6 = "utura gran"
local spell7 = "exura san"
local spell8 = "exevo gran mas flam"
-- Spells
local words1 = "utori bomb flam"
local words2 = "utori bomb vis"
local words3 = "exori pyro"
local words4 = "exevo en vis"
local words5 = "exevo gran mas vis"
local words6 = "exana gran restora"
local words7 = "exana restora"
local words8 = "exevo gran mas flam"

-- Don't touch this if you don't know what are you doing
Module.New('UltimateCombo', function(mod)
local creature = Creature.GetByID(Self.TargetID())
    if creature:isValid() and creature:isAlive() and creature:DistanceFromSelf() <= dist and creature:isTarget() then

            if Self.GetSpellCooldown(spell1) == 0 then
                Self.Cast(words1, mana)
                wait (2100)
            end

            if Self.GetSpellCooldown(spell2) == 0 then
                Self.Cast(words2, mana)
                wait(2350)
            end

            if Self.GetSpellCooldown(spell3) == 0 then
                Self.Cast(words3, mana)
                Self.UseItemWithTarget(runeid)
                wait(1900)
            end

            if Self.GetSpellCooldown(spell4) == 0 then
                Self.Cast(words4, mana)
                Self.UseItemWithTarget(runeid)
                wait(2100)
            end

            if Self.GetSpellCooldown(spell5) == 0 then
                Self.Cast(words5, mana)
                Self.UseItemWithTarget(runeid)
                wait(2100)
            end

            if Self.GetSpellCooldown(spell8) == 0 then
                Self.Cast(words8, mana)
                Self.UseItemWithTarget(runeid)
            end

        end
            if Self.GetSpellCooldown(spell6) == 0 then
                Self.Cast(words6, mana)
            end

            if Self.GetSpellCooldown(spell7) == 0 then
                Self.Cast(words7, mana)
            end
    end)