TextLabel is not changing?

My localscript is not changing the text, no errors in the output or anything I have no idea why so i just decided to ask here whats the problem? What i want to do here is change everybodies text with the typewrite effect

for i,v in pairs (game.Players:GetPlayers()) do
local TextLabel= v.PlayerGui.ScreenGui.TextLabel
    local function typewrite(object, text, length)
        for i = 1,#text,1 do
            object.Text = string.sub (text,1,i)
            workspace["UnderTale - Text Sound(Fixed)"]:Play()
            wait(length)
            TextLabel.Visible = true
        typewrite(TextLabel, "Text")
        wait(1)
        typewrite(TextLabel, "Text2")
        wait(1)
        typewrite(TextLabel, "Text3.")
            wait(3)
            TextLabel.Visible = false
            TextLabel.Text = "-"
        end
    end
end