local config = {
    summonName = "Orc",
    cost = 10000, -- in gp, put 0 to disable
    remove = "yes" -- should egg by removed after use?
}

config.remove = (config.remove == "yes" and true or false)
function onUse(player, item, fromPosition, target, toPosition, isHotkey)
    local pos = player:getPosition()
    if(pos.x == CONTAINER_POSITION) then
        player:sendCancelMessage("Put item on the floor first.")
        return true
    end

    if(config.cost > 0 and player:getMoney() < config.cost) then
        player:sendCancelMessage("Not enought money, trainer cost " .. config.cost .. " gp's.")
        return true
    end

    effect = CONST_ME_MAGIC_RED

    Game.createMonster(config.summonName, pos)
    ret:setMaster(player)
    if(config.cost > 0) then
            player:removeMoney(config.cost)
    end
    if(config.remove == true) then
        item:remove(1)
    end

    Position(pos):sendMagicEffect(effect)
    return true
end