Roblox Run Toggle

--[VARIABLES]--
local uis = game:GetService("UserInputService")
local player = game.Players.LocalPlayer

--[KEY INPUTS]--
uis.InputBegan:Connect(function(input, gameProcessedEvent)
    if gameProcessedEvent then return end
    if input.KeyCode == Enum.KeyCode.R then -- change R to whatever key you want as a hotkey (has to be all uppercase)
        local humanoid = player.Character and player.Character:FindFirstChild("Humanoid")
        if humanoid then
            speedToggle = not speedToggle --toggle for the speed (normal for it to be underlined)
            humanoid.WalkSpeed = speedToggle and 32 or 16 --the 2 speeds you can get
        end
    end
end)