How to make the textButton appear ?

I want to make a button that when clicked, will get a list of all players. The only problem to this is that the button is invisible/transparent but in the code, I made all transparency values to 0 and visible to true

local kick = script.Parent

local function Choose()
	local players = game.Players:GetPlayers()
	for i = 1,#players do
		local newgui = Instance.new("TextButton")
		newgui.Name = "newgui"
		newgui.Parent = game.StarterGui.ScreenGui
		newgui.BackgroundTransparency = 0
		newgui.Visible = true
		newgui.ZIndex = 1
		newgui.Position = UDim2.new(0.5, 0,0, 0)
		newgui.Size = UDim2.new(0, 200,0, 50)
		newgui.Text = tostring(players[i])
	end
end

kick.MouseButton1Click:Connect(Choose)

I can see it is on the screen by selecting it in the explorer but it is just invisible. The text value is equal to denbra37 but it is transparent too.