Game not detecting PlayerAdded?

Hey! I've got a problem when trying to run a PlayerAdded function in a Script. It works fine in Studio, but it simply doesn't fire the function in the real game.

Here's my code:

local DescenParent -- I put it here so I can access it from different functions

function PlayerAdded(plr)
    print(1) --I made this to check if the function was fired
    local WorkerDesk = script.Parent:GetDescendants() 
    local Scripts = plr:WaitForChild("Scripts"):WaitForChild("MScripts") --Gets the value of a stat i've done
    wait(0.2)
    for index, descendant in pairs(WorkerDesk) do
        if descendant.Name == "Worker" and Scripts.Value < 1 then --Checks if the descendant is a Worker and if the value is less than 1
            DescenParent = descendant.Parent --sets the DescenParent value to the current descendant parent, so I can return the model to that parent later
            descendant.Parent = game.ServerStorage --moves the models to ServerStorage, making them invisible/untouchable
        end
    end
    Scripts.Changed:Connect(function() --fires when the value is changed
        for index, descendant in pairs(WorkerDesk) do 
            if descendant.Name == "Worker" and Scripts.Value > 0 then --checks if the descendant is a worker and if the player has more than one scripts
                descendant.Parent = DescenParent --gives the models back to their last parent
            end
        end
    end)
end

game.Players.PlayerAdded:Connect(PlayerAdded) --Calls the function

I'm going to explain what I want to do so it is easier for you to understand the code objectives.

It is a game based in Mario 64 where you have to collect Scripts (just like mario stars). This code should make a group of workers (Not NPCs, just models) appear in a specific place when the player has at least 1 script.

--game
    --workspace
        --Desks(folder)
            --MScriptChecker(this script)
            --RandomModel1
            --RandomModel2
            --Worker(model)
            --Worker(model)
    --players
        --RandomPlayer1
            --Scripts(folder)
                --MScripts(NumValue)

I hope someone can help me with all the info I provided. I have been stuck so long in this code. I don't know why it doesn't fire any of the function. Thanks.