Why isn't the gui number changing?

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local Number = game.StarterGui.ScreenGui.RadioNumb.Radio.Value
local textGui = script.Parent


local uis = game:GetService("UserInputService")
uis.InputEnded:connect(function(inst)
    if inst.KeyCode == Enum.KeyCode.E then
        Number = Number + 1
		textGui.Text = string(Number)
		print("work")
    end
end)
uis.InputEnded:connect(function(inst)
    if inst.KeyCode == Enum.KeyCode.Q then
        Number = Number - 1
		textGui.Text = string(Number)
		print("work")
    end
end)

I was trying to make a radio as a game, with music. I want it to work sorta like a radio. The gui thing looks like this

ScreenGui -> TextGui:RadioNumb -> IntValue:Radio, LocalScript:changeStation

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local Number = game.StarterGui.ScreenGui.RadioNumb.Radio.Value
local textGui = script.Parent


local uis = game:GetService("UserInputService")
uis.InputEnded:Connect(function(inst)
    if inst.KeyCode == Enum.KeyCode.E then
        Number = Number + 1
        textGui.Text = tostring(Number)
        print("work")
    elseif inst.KeyCode == Enum.KeyCode.Q then
        Number = Number - 1
        textGui.Text = tostring(Number)
        print("work")
    end
end)

tostring(), not string()

also change connect to Connect

and you can use elseif instead of two ifs