Help making certain NPCs run away?

Ever since ROBLOX removed negative walkspeeds that effectively invert controls for no reason, I've been desperately been trying to find a way to make certain NPCs run away. Here's my code.

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 = 50

	local temp = nil

	local human = nil
 
    local human2 = 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("Cop")

			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



while true do

	wait(0.1)

	local target = findNearestTorso(script.Parent.Torso.Position)

	if target ~= nil then

		script.Parent.Special:MoveTo(target.Position, -1)

	end

end