Lua Add Level and Experience onUse ModalWindows

[alejandro762]

Hello everyone

I wish to know if is possible to add a Level and experience system on a modal windows for craft ?
Since i tried with the right parts of level storage and experience storage, working on jobs, but pressing the button "craft" it doesn't show any error and not work.
here is my script
I tried on both, on the action script also on the lib file of modalwindows , if is needed the lib file i will post it

Thanks in advance

local skinningCraft = Action()

function capAll(str)
    return str:gsub("^(%a)", string.upper):gsub("([^%a]%a)", string.upper)
end
local config = {
    mainTitleMsg = "Skinning Craft",
    mainMsg = "Welcome to the Skinning Craft System.\nPlease choose a category:",
 
    craftTitle = "Skinning Craft: ",
    craftMsg = "Click on Recipe to see the necessary items to craft an item.\n\nHere is a list of all items that can be crafted for the category:",
    needItems = "You do not have all the required items to make ",
    system = {
    [1] = {tiers = "Ressources",
            items = {
                [1] = {item = "Hardened Skin",
                        itemID = 10104,
                        reqItems = {
                                [1] = {item = 10124, count = 10}, -- 2 Dorsal Fur
                                [2] = {item = 10137, count = 10}, -- 2 Monster Jaws
                                [3] = {item = 10128, count = 10}, -- 1 Clog
                            },
                        },
 
                [2] = {item = "Monster Skull",
                        itemID = 10131,       
                        reqItems = {
                            [1] = {item = 10136, count = 3}, -- 3 Skull of dragon
                            [2] = {item = 10106, count = 3}, -- 3 Giant Monster Scale
                            },
                        },                   
 
                [3] = {item = "Tail Bone",
                        itemID = 10129,           
                        reqItems = {
                            [1] = {item = 10032, count = 10}, -- 10 Monster Pawn
                            [2] = {item = 10100, count = 3}, -- 3 Large chunk of meat
                    },
                },
 
                [4] = {item = "Monster Horn",
                        itemID = 10130,               
                        reqItems = {
                                    [1] = {item = 10126, count = 3}, -- 3 Fractured Bones
                                    [2] = {item = 10125, count = 3}, -- 3 Monster Tail
                        },
                    },
 
                [5] = {item = "Golden Dragon Scale",
                        itemID = 10133,               
                        reqItems = {
                                    [1] = {item = 10134, count = 10}, -- 10 Silver Dragon Scale
                                    [2] = {item = 10122, count = 1}, -- 1 Rare Leather
                        },
                    },
 
                [6] = {item = "Dorsal Bone",
                        itemID = 10139,           
                        reqItems = {
                                    [1] = {item = 10109, count = 3}, -- 3 Giant monster ribs
                                    [2] = {item = 10138, count = 2}, -- 2 Vertebral Column
                        },
                    },
                },
            },
        },
    }
 
function skinningCraft.onUse(player, item, fromPosition, itemEx, toPosition, isHotkey)
    player:sendMainCraftWindow(config)
    return true
end
skinningCraft:id(13946)
skinningCraft:register()

The part of Lib while i tried to add the exp & level:

if button.text == "Craft" then
        local item = config.system[lastChoice].items[choice.id].item
            for i = 1, #config.system[lastChoice].items[choice.id].reqItems do
                if self:getItemCount(config.system[lastChoice].items[choice.id].reqItems[i].item) < config.system[lastChoice].items[choice.id].reqItems[i].count then
                    self:say(config.needItems..config.system[lastChoice].items[choice.id].item, TALKTYPE_MONSTER_SAY)
                    return false
                end
            end   
            for i = 1, #config.system[lastChoice].items[choice.id].reqItems do
                self:removeItem(config.system[lastChoice].items[choice.id].reqItems[i].item, config.system[lastChoice].items[choice.id].reqItems[i].count)
            end               
        self:addItem(config.system[lastChoice].items[choice.id].itemID)
        self:sendTextMessage(MESSAGE_EVENT_ADVANCE, "You have crafted "..item..".")
        self:getPosition():sendMagicEffect(CONST_ME_HOLYAREA)
        end

The Parts / Functions i used to create the Experience & Level system on it (made by xikini):

local Herbalist = {
    maxLevel = 400,
    experiencePerLevel = 500,
    storage = {
        level = 45007,
        experience = 45008
    },
}

local function giveHerbalistExperience(playerId, amount)
    local player = Player(playerId)
    if not player then
        print("Error in function giveHerbalistExperience -> player does not exist (check to ensure playerId being passed to function is correct)")
        return false
    end
 
    local HerbalistLevel = player:getStorageValue(Herbalist.storage.level)
    HerbalistLevel = HerbalistLevel >= 0 and HerbalistLevel or 0
 
    local HerbalistExperience = player:getStorageValue(Herbalist.storage.experience)
    HerbalistExperience = HerbalistExperience >= 0 and HerbalistExperience or 0
 
    
    HerbalistExperience = HerbalistExperience + amount
 
    if HerbalistLevel < Herbalist.maxLevel then
        repeat   
            local ExperienceRequiredForNextLevel = HerbalistLevel * Herbalist.experiencePerLevel
            if HerbalistExperience >= ExperienceRequiredForNextLevel then
                HerbalistExperience = HerbalistExperience - ExperienceRequiredForNextLevel
                HerbalistLevel = HerbalistLevel + 1
                local text = "You have advanced to Herbalist level " .. HerbalistLevel .. "."
                if HerbalistLevel == Herbalist.maxLevel then
                    text = "You have reached the maximum Herbalist level."
                end
                player:sendTextMessage(MESSAGE_EVENT_ADVANCE, text)
            else
                break
            end
        until (HerbalistLevel == Herbalist.maxLevel)
    end
 
    player:setStorageValue(Herbalist.storage.level, HerbalistLevel)
    player:setStorageValue(Herbalist.storage.experience, HerbalistExperience)
    return true
end

-- after function:
local levels = {
        expgainmin = 125, -- DO NOT CHANGE !
        expgainmax = 225, -- DO NOT CHANGE !
    }
local experienceRan = math.random(levels.expgainmin, levels.expgainmax)

if giveHerbalistExperience(player:getId(), experienceRan) then
            player:sendTextMessage(MESSAGE_INFO_DESCR, "You have gained "..experienceRan.." experience on herbalist job.")
            
        end