OnPickupHit called twice

[Xabi]

Hi all, I've got a problem with this callback, as it's executed twice sometimes in my house system.

When I create a house with the command (/crearcasa) it just gets called once, but if I load all houses from the database and step into the pickup, the callback gets called twice.

function loadAllHouses() 
    local query = dbQuery(connectionHandle, "SELECT * FROM houses") 
    local result = dbPoll(query, -1) 
    for _, row in ipairs(result) do 
        local housePickup = createPickup(row["posX"], row["posY"], row["posZ"], 3, 1273, 0, 0) 
        setElementData(housePickup, "houses.hId", row["id"]) 
        ... Set all data in database here 
        addEventHandler("onPickupHit", housePickup, showHouseInfo) 
    end 
    dbFree(query) 
end 
  
function createHouseCommand(playerSource, commandName) 
    if playerSource then 
        local posX, posY, posZ = getElementPosition(playerSource) 
        ... Create all needed variables 
        local housePickup = createPickup(posX, posY, posZ, 3, 1273, 0, 0) 
        setElementData(housePickup, "houses.hPosX", posX) 
        ... Setting again all data 
        local query = dbQuery(connectionHandle, "INSERT INTO houses (posX, posY, posZ, interior, dimension, houseType) VALUES (?, ?, ?, ?, ?, ?)", posX, posY, posZ, interior, dimension, houseType) 
        local result, num_affected_rows, last_insert_id = dbPoll(query, -1) 
        setElementData(housePickup, "houses.hId", last_insert_id) 
        addEventHandler("onPickupHit", housePickup, showHouseInfo) 
    end 
end 
  
function showHouseInfo(thePlayer) 
    triggerClientEvent(thePlayer, "onShowHouseInfo", thePlayer, source) 
end 
  
addEventHandler("onResourceStart", getRootElement(), loadAllHouses) 
addCommandHandler("crearcasa", createHouseCommand) 

What can be wrong with this code? Thanks in advance

[Xabi]

Anybody knows what can it be, please?