Some One Help ME Whit Stamina Bar Jumpig + Running?

Hello,Im Doing Stamina Bar But Is Not Working SOme OnE can Help Me?

local player = game.Players.LocalPlayer
local character = player.character
local s = script.Parent.B

local UserInputService = game:GetService("UserInputService")

local stamina = 200
local running = false
local jumping = false


stamina = math.clamp(stamina,0,200)

UserInputService.InputBegan:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.LeftShift or Enum.KeyCode.Space then
		running = true 
		character.Humanoid.WalkSpeed = 26
		while stamina > 0 and running and jumping do
			stamina = stamina - 1
			s:TweenSize(UDim2.new(stamina /200,0,1,0), "Out", "Linear", 0)
			wait ()
			if stamina == 0 then 
				character.Humanoid.WalkSpeed = 0
                character.Humanoid.JumpPower = 0
			end
		end
	end
end)

UserInputService.InputEnded:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.LeftShift or Enum.KeyCode.Space then
		running = false
		character.Humanoid.WalkSpeed = 16
		while stamina < 200 and not running and not jumping do
			stamina = stamina + 1
			s:TweenSize(UDim2.new(stamina /200,0,1,0), "Out", "Linear", 0)
			wait()
			if stamina == 0 then
				character.Humanoid.WalkSpeed = 0
				character.Humanoid.JumpPower = 0
			end
		end
	end
end)