Stamina doest go down when running when not full

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game:GetService("UserInputService").InputBegan:Connect(function(Input, gameProccesed)
	if (Input.KeyCode == Enum.KeyCode.LeftShift) and Parent:FindFirstChild("Humanoid") and Humanoid.Health > 0 and Humanoid.WalkSpeed ~= 0 and not gameProccesed and script.SprintLock.Value == false then
		TweenService:Create(workspace.CurrentCamera, TweenInfo.new(0.3, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut), {
			FieldOfView = 80
		}):Play();
		Humanoid.WalkSpeed = 23
		local signal = Humanoid:GetPropertyChangedSignal("MoveDirection")
		connection = signal:Connect(function()
			if Humanoid.MoveDirection.Magnitude > 0 and Humanoid.WalkSpeed == 23 then
				if not Sprint.IsPlaying then
					Sprint:Play(.2)
				else
					return
				end
			elseif Humanoid.MoveDirection.Magnitude <= 0 then
				Sprint:Stop(.25)
			end
		end)
		Sprinting = true;
		while stamina > 0 and Sprinting == true do
			stamina = stamina - 1
			script.Parent:TweenSize(UDim2.new(stamina/ 100, 0, 1, 0), "Out", "Linear", 0)
			task.wait()
			if stamina == 0 then
				TweenService:Create(workspace.CurrentCamera, TweenInfo.new(0.3, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut), {
					FieldOfView = 70
				}):Play();
				connection:Disconnect()
				Humanoid.WalkSpeed = 16
				Sprint:Stop(.25)
				Sprinting = false;
			end
		end
	end;
end);

game:GetService("UserInputService").InputEnded:Connect(function(Input)
	if (Input.KeyCode == Enum.KeyCode.LeftShift) and Parent:FindFirstChild("Humanoid") and Humanoid.Health > 0 and Humanoid.WalkSpeed ~= 0 then
		TweenService:Create(workspace.CurrentCamera, TweenInfo.new(0.3, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut), {
			FieldOfView = 70
		}):Play();
		connection:Disconnect()
		Humanoid.WalkSpeed = 16
		Sprint:Stop(.25)
		Sprinting = false;
		while stamina < 100 do
			stamina = stamina + 1
			script.Parent:TweenSize(UDim2.new(stamina/ 100, 0, 1, 0), "Out", "Linear", 0)
			task.wait()
			if stamina == 0 then
				TweenService:Create(workspace.CurrentCamera, TweenInfo.new(0.3, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut), {
					FieldOfView = 70
				}):Play();
				connection:Disconnect()
				Humanoid.WalkSpeed = 16
				Sprint:Stop(.25)
				Sprinting = false;
			end
		end
	end;
end);