Lua NPC Guardian

[plus]

I'm creating an NPC so that if the player gets the magic word right, the player is teleported to a specific area. The NPC can't interact, it just hears the right word and teleports the player, but it's not working.

local internalNpcName = "Guardian"
local npcType = Game.createNpcType(internalNpcName)
local npcConfig = {}

npcConfig.name = internalNpcName
npcConfig.description = internalNpcName

npcConfig.health = 100
npcConfig.maxHealth = npcConfig.health
npcConfig.walkInterval = 0
npcConfig.walkRadius = 2

npcConfig.outfit = {
    lookTypeEx = 2152,
}

npcConfig.flags = {
    floorchange = false,
}

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)

npcType.onThink = function(npc, interval)
    npcHandler:onThink(npc, interval)
end

npcType.onAppear = function(npc, creature)
    npcHandler:onAppear(npc, creature)
end

npcType.onDisappear = function(npc, creature)
    npcHandler:onDisappear(npc, creature)
end

npcType.onMove = function(npc, creature, fromPosition, toPosition)
    npcHandler:onMove(npc, creature, fromPosition, toPosition)
end

npcType.onSay = function(npc, creature, type, message)
    npcHandler:onSay(npc, creature, type, message)
end

npcType.onCloseChannel = function(npc, creature)
    npcHandler:onCloseChannel(npc, creature)
end

local function creatureSayCallback(npc, creature, type, message)
    local player = Player(creature)

    if not npcHandler:checkInteraction(npc, creature) then
        return false
    end

    local topos = { x = 32311, y = 11005, z = 6 }
    player:teleportTo(topos)
end

-- Greeting message
keywordHandler:addGreetKeyword({ "abracadabra" }, {
    npcHandler = npcHandler,
})
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:setCallback(CALLBACK_GREET, greetCallback)

-- npcType registering the npcConfig table
npcType:register(npcConfig)

Can anyone tell me what I'm doing wrong?