What is wrong with my LevelUp Script?

I've written this LevelUp script, but it doesn't work. It just doesn't set the player's level, despite the Experience being enough. I changed my Experience to 1500 to check if it worked, but I remained at level 1. What is the problem?

local xps = {0,3, 6, 10, 15, 20, 25, 30, 40, 50,
    65, 80, 95, 110, 125, 140, 155, 180, 210,
    250, 300, 350, 400, 450, 500, 575, 650, 725,
    825, 1000};

function experience()
    Player = game.Players.LocalPlayer
    local xp = Player.Exp.Value
    for level = 1, #xps do
        --[[The square bracket gets a certain item out of a table.
        If it were xps[1] it would get the 1st item; xps[2] the second item, and so on.
        Starts at level one, and goes through all the xps associated with each level.]]
        if xp >= xps[level] * 100 then
            --If the player's xps is greater than the required amount, it levels them up.
            Player.leaderstats.Level.Value = level;
        end
    end
    Player.Character:WaitForChild("Humanoid").MaxHealth = 200 + 100 * Player.leaderstats.PlayerLevel.Value
    --Sets their health. If they have a higher level, they get more health.
end

game.Players.PlayerAdded:connect(experience)
game.Players.LocalPlayer.Exp.Changed:connect(experience)