Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 card, then target 1 face-up monster you control that has a Level; send it to the GY, also, after that, if it left the field by this effect, Special Summon from your Extra Deck, 1 "Masked HERO" monster with the same Attribute, but a higher Level than, the Attribute/Level the monster had when it was on the field (its original Attribute/Level, if face-down). (This is treated as a Special Summon with "Mask Change".) You can only activate 1 "Mask Change II" per turn.
--マスク・チェンジ・セカンド
--Mask Change II
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_MASKED_HERO}
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsDiscardable,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,Card.IsDiscardable,1,1,REASON_COST|REASON_DISCARD)
end
function s.filter(c,e,tp)
	local lv=c:GetLevel()
	local att=c:GetAttribute()
	return lv>0 and c:IsFaceup()
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_EXTRA,0,1,nil,e,tp,lv,att,c)
end
function s.spfilter(c,e,tp,lv,att,mc)
	return c:IsSetCard(SET_MASKED_HERO) and c:GetLevel()>lv and c:IsAttribute(att) and Duel.GetLocationCountFromEx(tp,tp,mc,c)>0 and c:IsCanBeSpecialSummoned(e,0,tp,true,false)
end
function s.chkfilter(c,tc)
	local lv=tc:GetLevel()
	local att=tc:GetAttribute()
	return c:IsFaceup() and c:IsLevelBelow(lv) and c:IsAttribute(att)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_MZONE) and s.chkfilter(chkc,e:GetLabelObject()) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
	e:SetLabelObject(g:GetFirst())
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) then return end
	local att=tc:GetAttribute()
	local lv=tc:GetLevel()
	if Duel.SendtoGrave(tc,REASON_EFFECT)==0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_EXTRA,0,1,1,nil,e,tp,lv,att)
	if #g>0 then
		Duel.BreakEffect()
		Duel.SpecialSummon(g,0,tp,tp,true,false,POS_FACEUP)
		g:GetFirst():CompleteProcedure()
	end
end