A weapon is not doing damage to a Zombie because of the Humanoid's name. Could you please help?

I have to change the weapon's script, because if I re-name the Humanoid "Zombie" to Humanoid "Humanoid", the zombie would take damage, but will not follow anyone. If the Humanoid is left as "Zombie", if will follow and kill players, other models with humanoids, however any attempt to kill it with that weapon would fail. This issue has stumped me for two days, and is very gamebreaking. Here are snippets of code:

The Weapon (Raycasting Gun)

function raycast(startp, endp, ign)
	local vec=(endp-startp)
	if vec.magnitude<1000 then
	local hit,pos=game.Workspace:FindPartOnRay(Ray.new(startp,vec),ign)
	if hit and pos then
		if hit.Parent.className=="Tool" or hit.Parent.className=="Hat" then
			if hit.Parent.Parent ~= nil then
			if hit.Parent.Parent:findFirstChild("Humaniod")~=nil then
			return hit.Parent, pos
			end
			end
		elseif string.lower(hit.Name)=="glass" then
			local vec=(endp-pos)
			hit,pos=raycast(pos,vec,ign)
		elseif string.lower(hit.Name)=="water" then
			local vec=(endp-pos)
			hit,pos=raycast(pos,vec,ign)
		elseif hit.Transparency==1 or hit.Name=="Bullet" or hit.Name=="BulletTexture" then
			local vec=(endp-pos)
			hit,pos=raycast(pos,vec,hit)
		end
	end
	return hit,pos
	end
	return nil
end
-------------------------------------------------------------------------------






function tagHumanoid(humanoid)
	local plr=game.Players:playerFromCharacter(sp.Parent)
	if plr~=nil then
		local tag=Instance.new("ObjectValue")
		tag.Value=plr
		tag.Name="creator"
		tag.Parent=humanoid
		delay(2,function()
			if tag~=nil then
				tag.Parent=nil
			end
		end)
	end
end

And the script of the zombie: local larm = script.Parent:FindFirstChild("Left Arm") local rarm = script.Parent:FindFirstChild("Right Arm")

function findNearestTorso(pos) local list = game.Workspace:children() local torso = nil local dist = 1000 local temp = nil local human = nil local temp2 = nil for x = 1, #list do temp2 = list[x] if (temp2.className == "Model") and (temp2 ~= script.Parent) then temp = temp2:findFirstChild("Torso") human = temp2:findFirstChild("Humanoid") if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then if (temp.Position - pos).magnitude < dist then torso = temp dist = (temp.Position - pos).magnitude end end end end return torso end

function Hit(hit) if hit.Parent ~= nil then local human1 = hit.Parent:findFirstChild("Humanoid") if human1 ~= nil then human1.Health = human1.Health -15 end end end

larm.Touched:connect(Hit) rarm.Touched:connect(Hit)

--wait(math.random(0,5)/10) while true do wait(0.5) local target = findNearestTorso(script.Parent.Torso.Position) if target ~= nil then script.Parent.Zombie:MoveTo(target.Position, target) end end

I can't really script, but I know a few things about scripting. If you need more information, I'll happily provide it. Could you please provide a few pointers on this problem? Thank you!

If I'm correct all you have to do is change the name of the "Humanoid" in the zombie to whatever it says in the script for the gun. Usually called "shooter" but if not then try finding the script that has stats for the gun such as damage or range.