crouch script not working properly, can anyone help?

Hey, im making a server sided crouching script for my backrooms game, it works, however, the crouching animation wont stop when i stop holding the button, can anyone help?

a part of the local script

us.InputBegan:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.C then
		crouchserver:FireServer("Play")
	end
end)

us.InputEnded:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.C then
		crouchserver:FireServer("Stop")
	end
end)

server script

local rs = game:GetService("ReplicatedStorage")
local event = rs.crouchserver

event.OnServerEvent:Connect(function(player, bool)
	local player = player
	local character = player.Character or player.CharacterAdded:wait()
	local hum = character:FindFirstChild("Humanoid")
	local hmrp = character:FindFirstChild("HumanoidRootPart")
	local animation = Instance.new("Animation")
	animation.AnimationId = "http://www.roblox.com/asset/?id=9264758487"
	local animation2 = hum:LoadAnimation(animation)
	local originalwalkspeed = hum.WalkSpeed
	
	if bool == "Play" then
		animation2:Play()
		hum.WalkSpeed = 5
	elseif bool == "Stop" then
		animation2:Stop()
		hum.WalkSpeed = originalwalkspeed
	end
end)