My Death Script won't work when I set it below 1?

Hello everyone, I have a problem with a simple script that I made. Basically, if your health is below 1, it will play an animation, then reload the character. I tried to change the humanoid in game below 1, but nothing happens. Thank you for your help.

local plr = game.Players.LocalPlayer
local char = plr.Character
local humanoid = char.Humanoid

local animation = Instance.new("Animation")
animation.AnimationId = "rbxassetid://01360428041"
local track = humanoid:LoadAnimation(animation)

if humanoid.Health < 1 then
	humanoid.WalkSpeed = 0
	track:Play()
	wait(5)
    plr:LoadCharacter()
end

Ok so the best way to do this is actually through a function. Instead of

if humanoid.Health < 1 then
    humanoid.WalkSpeed = 0
    track:Play()
    wait(5)
    plr:LoadCharacter()
end

Use the following:

char:WaitForChild("Humanoid").Died:connect(function()
	humanoid.WalkSpeed = 0
   	track:Play()
    	wait(5)
    	plr:LoadCharacter()
end)

However you dont need walkspeed set to 0 as the player is already dead. I am assuming you have that in there for a reason though so I left it there.