Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.
--ランサー・ドラゴニュート
--Lancer Dragonute
local s,id=GetID()
function s.initial_effect(c)
	--pierce
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_PIERCE)
	c:RegisterEffect(e1)
end