Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can only activate this card during your opponent's turn. Select 1 face-up monster on your opponent's side of the field. When you Normal Summon a monster that is 1 Level lower than the selected monster during your next turn, inflict damage to your opponent's Life Points equal to the Level of the selected monster x 500 points.
--運命のドラ
--Dora of Fate
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(TIMING_ATTACK,TIMINGS_CHECK_MONSTER_E)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(1-tp)
end
function s.filter(c)
	return c:IsFaceup() and c:GetLevel()>1
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(1-tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,0,LOCATION_MZONE,1,1,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsFaceup() and tc:IsRelateToEffect(e) then
		local lv=tc:GetLevel()
		if lv>1 then
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
			e1:SetCode(EVENT_SUMMON_SUCCESS)
			e1:SetCountLimit(1)
			e1:SetCondition(s.damcon)
			e1:SetOperation(s.damop)
			e1:SetLabel(lv)
			e1:SetReset(RESET_PHASE|PHASE_END,2)
			Duel.RegisterEffect(e1,tp)
		end
	end
end
function s.damcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(tp) and ep==tp and eg:GetFirst():GetLevel()==e:GetLabel()-1
end
function s.damop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Damage(1-tp,e:GetLabel()*500,REASON_EFFECT)
end