how do i make the NPC follow me as a player?

hello scripter's and helper's i need some help with this script:

function findNearestPlayer(Position)
	wait(0.3)
	local List = game.Workspace:children()
	local Torso = nil
	local Distance = 250
	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("HumanoidRootPart")
			Human = Temp2:findFirstChild("Humanoid")
			if (Temp ~= nil) and (Human ~= nil) and (Human.Health > 0) then
				if (Temp.Position - Position).magnitude < Distance then
					Torso = Temp
					Distance = (Temp.Position - Position).magnitude
				end
			end
		end
	end
	return Torso
end




while true do
	local target = findNearestPlayer(script.Parent.HumanoidRootPart.Position)
	if target ~= nil then
		script.Parent.Humanoid:MoveTo(target.Position, target)
	end
end

this should make the NPC follow the nearest player but it doesnt follow me when i tested it out.

OMG I AM so sorry everyone this was a mistake of mine one of the parts or something on the NPC Was anchored so that was why it coulden't move! sorry again but thanks anyways to all of the people that tried and wanted to help me