Can someone explain me why this code is not working? Because I am desperate.

Hi guys. I would be really happy if you can explain me why this is not working.

this is the code:

local door = script.Parent

local vips = {"DNF2307","Roox4"} -- those are the arrays

local check = false

function checkVip(hit)
	local humanoid = hit.Parent:FindFirstChild("Humanoid")
	for i = 1, #vips do
		if hit.Parent.Name == vips[i] then
			check = true
		elseif check == false then
			humanoid.Health = 0
		end
	end
end

door.Touched:connect(checkVip)

So basically i made a vip door so only the people who have their name in the arrays are able to get through. The problem with this is that if someone who has their name in the arrays on the second place it will kill him. If on the first it's ok. And it also prints that the humanoid is a nil value which I don't understant too. If anyone of you know the solution please tell me. Thanks.