RevScripts event problem revscript castlewar

[Thiagobs]

I was looking for a castle event in revscript and found this one, I didn't quite understand how it works can someone help me? the event starts the monsters spawn at the doors, but nothing happens when they die

script

local guilds = {}

local castlewar = CreatureEvent("CastleWar")
function castlewar.onHealthChange(creature, attacker, primaryDamage, primaryType, secondaryDamage, secondaryType, origin)
    local isGuild = false
    local damage = primaryDamage + secondaryDamage

    if attacker:isPlayer() == false then
        if attacker:getMaster() == false then
            return
        end
        attacker = attacker:getMaster()
    end

    if attacker:getGuild() == nil then
        return
    end

    for k,v in pairs(guilds) do
        if v[1] == attacker:getGuild():getId() then
            v = {v[1], v[2] + damage}
            isGuild = true
            break
        end
    end


    if not isGuild then
        guilds[#guilds+1] = {attacker:getGuild():getId(), damage}
    end

    if creature:getHealth() - damage <= 0 then
        table.sort(guilds, function(a,b) return a[2] > b[2] end)
        db.query("CREATE TABLE IF NOT EXISTS `castle` (`guild_id` int(11) NOT NULL, guild_name varchar(255) NOT NULL) ENGINE=InnoDB DEFAULT CHARACTER SET=utf8;")
        db.query("DELETE FROM `castle`")
        if guilds[1][1] ~= nil then
            local info = db.storeQuery("SELECT `name`, `ownerid` FROM `guilds` WHERE `id` = " .. guilds[1][1] .. " LIMIT 1")
            local name = result.getString(info, "name")
            local owner = result.getString(info, "ownerid")
            db.query("INSERT INTO `castle` VALUES (".. guilds[1][1] ..", '".. name .."')")
            broadcastMessage(woe.eventName.." has ended. Congratulations to ".. name .." for claiming ownership of the castle!", MESSAGE_EVENT_ADVANCE)
            Tile(woe.castle):getHouse():setOwnerGuid(owner)
        end
        guilds = {}

        for k,v in pairs(woe.doors) do

            if Creature(v.name) ~= nil then
                Creature(v.name):remove()
            end
        
            local door = Game.createItem(v.id, 1, v.pos)
            door:setActionId(woe.actionid)
        end

    end

    return primaryDamage, primaryType, -secondaryDamage, secondaryType
end
castlewar:register()


local castlewarglobal = GlobalEvent("CastleWarGlobal")

function castlewarglobal.onTime(interval)
    if os.date("%H:%M") == woe.days[os.date("%A")] then
        woe.queueEvent(woe.timeDelay+1)
    end
end

castlewarglobal:time("18:00:00")
castlewarglobal:register()

local castlewartalk = TalkAction("!woe")
function castlewartalk.onSay(player, words, param)
    if not player:getGroup():getAccess() then
        return true
    end

    if player:getAccountType() < ACCOUNT_TYPE_GOD then
        return false
    end

    woe.queueEvent(woe.timeDelay+1)

    return false
end

castlewartalk:register()

lib

woe = {
    eventName = "[WOE]",
    timeDelay = 1, -- minutes before event starts
    bcMsg = " is starting in ",
    doors = {
        {name = "Castle Gate", id = 6257, pos = {x = 1021, y = 1028, z = 7} },
        {name = "Castle Gate", id = 6257, pos = {x = 1022, y = 1028, z = 7} }
    },
    actionid = 33542, -- for the doors
    crystal = {id = 9784, name="Emperium", pos = {x = 1022, y = 1020, z = 7} },
    castle = {x = 1012, y = 1027, z = 7}, -- just has to be one of the housetiles of the castle
    days = {
        -- to enable a day for the globalevent do ["Weekday"] = time
        -- for example: ["Monday"] = 18:00,
    },

    queueEvent = function(x)
        x = x - 1
        if x > 0 then
            broadcastMessage(woe.eventName..woe.bcMsg..x..(x > 1 and "minutes!" or "minute!"), MESSAGE_EVENT_ADVANCE)
            addEvent(woe.queueEvent, x * 60 * 1000, x)
        else
            woe.startEvent()
        end
    end,

    startEvent = function()
        for k,v in pairs(woe.doors) do
            local item = Tile(v.pos):getItemById(v.id)
            if item ~= nil then
                item:remove()
                Game.createMonster(v.name, v.pos, false, true)
            else
                print("WOE GATE POSITION INVALID OR MISSING [x:"..v.pos.x.." | y:"..v.pos.y.." | z:"..v.pos.z.."]")
            end
        end
        local c = woe.crystal
        local item = Tile(c.pos):getItemById(c.id)
        if item ~= nil then
            item:remove()
            Game.createMonster(c.name, c.pos, false, true)
        else
            print("WOE CRYSTAL POSITION INVALID OR MISSING [x:"..c.pos.x.." | y:"..c.pos.y.." | z:"..c.pos.z.."]")
        end
    end,

}