Why won't this kill script work? :C

function Fire()
	print("Slow Kill!")
	local players = game.Players:GetChildren()
	for i=1,#players do
		if players[i].Character ~= nil then 
			print("...")
			players[i].Character.Humanoid.Health:TakeDamage(1)
			end
			end
			end

while wait(.5) do
Fire()
end

Also, can you please see if there is a more efficient way of doing this? There probably is and i'm just stupid.

function Fire()
    print("Kill em all!")
    local players = game.Players:GetChildren()
    for i=1,#players do
        if players[i].Character ~= nil then 
            print("...")
            players[i].Character.Humanoid.Health:TakeDamage(100) --simple mistake
            end
            end
            end

while wait(.5) do
Fire()
end

It works but you're only making them take 1 damage. When you need 100 to kill.

And for a more efficient method I would do this:

function Fire()
	for i, v in pairs(game.Players:GetChildren() do
		if v.Character then
			v.Character.Humanoid.Health = 0
		end
	end
end

while wait(.5) do 
	Fire()
end

now for a slow death:

function Fire()
	for i, v in pairs(game.Players:GetChildren() do
		if v.Character then
			repeat v.Character.Humanoid.Health = v.Character.Humanoid.Health - 1
				wait(.1)
			until v.Character.Humanoid.Health = 0 -- may be a double = im not sure. I don't use repeats alot
		end
	end
end

while wait(.5) do 
	Fire()
end