Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card attacks, it is changed to Defense Position at the end of the Damage Step.
--アックス・ドラゴニュート
--Axe Dragonute
local s,id=GetID()
function s.initial_effect(c)
	--to defense
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_DAMAGE_STEP_END)
	e1:SetCondition(s.poscon)
	e1:SetOperation(s.posop)
	c:RegisterEffect(e1)
end
function s.poscon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler()==Duel.GetAttacker() and e:GetHandler():IsRelateToBattle()
end
function s.posop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsAttackPos() then
		Duel.ChangePosition(c,POS_FACEUP_DEFENSE)
	end
end