data dosen't save even when I did a loop and used findfirstchild?

So basically the inventory is a folder with weopons inside it and the weopons all have a IntValue inside them called IDNumber each of them have a value the variable nok is the IntValue it won't save for some reason

local DataStore = game:GetService("DataStoreService"):GetDataStore('ToolSave')
game.Players.PlayerAdded:Connect(function(plr)
    local savedStuff = DataStore:GetAsync(plr.userId)
    if savedStuff ~= nil then
        for i,v in pairs(savedStuff) do
            for a,k in pairs(game.ServerStorage.Inventory) do
                IDnumebr = k:FindFirstChild('IDNumber')
                if v == IDnumebr.Value then
                    print(k.Name)
                local weopon = IDnumebr.Parent:Clone()
                weopon.Parent = plr:WaitForChild('Backpack')


                end
            end

        end
    end
plr.CharacterRemoving:Connect(function()
    plr.Character.Humanoid:UnequipTools()

end)
end)



game.Players.PlayerRemoving:Connect(function(plr)
    Table = {}
    for i,v in pairs(plr.Backpack:GetChildren()) do
        table.insert(Table,v:WaitForChild('IDNumber').Value)
    end
if Table ~= nil then
    DataStore:SetAsync(plr.userId,Table)
end
end)