Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Select and Special Summon 1 Level 4 or lower "Morphtronic" monster from your Graveyard. Destroy it during the End Phase.
--ジャンクBOX
--Junk Box
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_MORPHTRONIC}
function s.filter(c,e,tp)
	return c:IsSetCard(SET_MORPHTRONIC) and c:IsLevelBelow(4) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)~=0 then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
		e1:SetRange(LOCATION_MZONE)
		e1:SetCode(EVENT_PHASE+PHASE_END)
		e1:SetOperation(s.desop)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetCountLimit(1)
		tc:RegisterEffect(e1)
	end
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Destroy(e:GetHandler(),REASON_EFFECT)
end