i got error attempt to compare Vector3 < Vector3?

i am having a lot of trouble with making my custom character walk

error is at line 17

local player = script.Parent
local humanoid = player.Humanoid
local walk = script:WaitForChild("walk")
local walk_anim = humanoid.Animator:LoadAnimation(script.walk)
local walking_value = script.walking.Value
local player = game.Players.LocalPlayer
local speed = humanoid.MoveDirection

--walk_anim:Play()

function moved()
	--walk_anim:Play()
	--print("played animation")
	if speed == Vector3.new(0,0,0) then
		walk_anim:Stop()
	end
	if speed > Vector3.new(0,0,0) then
		print("player moved")
		walk_anim:Play()
	end
end

while true do
	humanoid.Changed:Connect(moved)
	print("fired function")
	wait(0.1)
end

It seems that you can’t compare Vector3’s using <=, <, >, or >= because Roblox doesn’t implement __lt nor __le metamethods.

A vector of 0, 0, 0 (X,Y,Z) always has a magnitude of 0, so you can compare the magnitude of a vector with another vector's magnitude.

##Problem:

The reason it didn't work was that you cannot compare a vector3 datatype to another vector3.

##Solution:

Make sure to add a magnitude, as that can get the distance of the humanoid's MoveDirection and make it work!

##Fixed Script:

local player = script.Parent
local humanoid = player:WaitForChild("Humanoid")
local walk = script:WaitForChild("walk")
local walk_anim = humanoid.Animator:LoadAnimation(script.walk)
local walking_value = script.walking.Value

--walk_anim:Play()

function moved()
	--walk_anim:Play()
	--print("played animation")
	if humanoid.MoveDirection == Vector3.new(0,0,0) then
	walk_anim:Stop()

	end
print("test")
	if humanoid.MoveDirection.Magnitude > 0  then -- change to your preference
		print("player moved")
		walk_anim:Play()
	end
end

while true do
	humanoid.Changed:Connect(moved)
	print("fired function")
	wait(5) -- added wait, to decrease lag!
end

P.S: This took me a whole day to test, edit and debug so an upvote and an accepted answer would help me out. Thank you!