Custom player list not working? Need help ASAP.

So basically, I've been trying to make this custom playerlist but for whatever reason, it doesn't work. Here is the script. Help would be great.

wait(.1)
Main = script.Parent.MainFrame
PL = Main.PlayerList

Pos = 15


function upd()
    getall = PL:GetChildren()

    for i=1, #getall do
        getall[i].Position = UDim2.new(0, 0, 0, Pos)
        PL.CanvasSize = UDim2.new(0, 0, 0, Pos)
        Pos = Pos + 120
    end
    Pos = 0
end

game.Workspace.Players.ChildAdded:connect(function(plr)
wait(.1)
    Frm = Instance.new('Frame', script.Parent.MainFrame.PlayerList)
    Frm.Name = plr.Name
    Frm.Size = UDim2.new(0.96, 0, 0, 120)
    Frm.Position = UDim2.new(0, 0, 0, 0)
    Frm.BackgroundTransparency = 1

    IL = Instance.new('ImageLabel', Frm)
    IL.Name = plr.Name
    IL.Image = 'https://www.roblox.com/Thumbs/Avatar.ashx?x=100&y=100&username=' ..plr.Name
    IL.Size = UDim2.new(0, 100, 0, 100)
    IL.Position = UDim2.new(0, 10, 0, 13)


    TL = Instance.new('TextLabel', Frm)
    TL.Text = plr.Name
    TL.BackgroundTransparency = 1
    TL.Position = UDim2.new(0.325, 0, 0.1, 0)
    TL.Size = UDim2.new(0, 250, 0, 50)
    TL.Font = 'Cartoon'
    TL.FontSize = 'Size14'
    TL.TextScaled = true
    TL.TextWrapped = true
    TL.TextXAlignment = 'Left' 
    TL.TextColor3 = Color3.new(255, 255, 255)
    upd()
end)





wait(.1)

game.Workspace.Players.ChildRemoved:connect(function(plr2)
wait(.1)
if PL:FindFirstChild(plr2.Name) then
    PL[plr2.Name]:remove()
    upd()
end

end)