Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
● While in Attack Position: Once per turn, you can Special Summon 1 Level 4 "Morphtronic" monster from your hand. Destroy it during the End Phase. ● While in Defense Position: While this card is in face-up Defense Position, it is Level 4.
--D・スコープン
--Morphtronic Scopen
local s,id=GetID()
function s.initial_effect(c)
	--special summon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetCountLimit(1)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCondition(s.cona)
	e1:SetTarget(s.tga)
	e1:SetOperation(s.opa)
	c:RegisterEffect(e1)
	--level
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_CHANGE_LEVEL)
	e2:SetCondition(s.cond)
	e2:SetValue(4)
	c:RegisterEffect(e2)
end
s.listed_series={SET_MORPHTRONIC}
function s.filter(c,e,tp)
	return c:IsSetCard(SET_MORPHTRONIC) and c:GetLevel()==4 and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.cona(e,tp,eg,ep,ev,re,r,rp)
	return not e:GetHandler():IsDisabled() and e:GetHandler():IsAttackPos()
end
function s.tga(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function s.opa(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
	local tc=g:GetFirst()
	if not tc then return end
	Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	local fid=e:GetHandler():GetFieldID()
	tc:RegisterFlagEffect(id,RESET_EVENT|RESETS_STANDARD,0,1,fid)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_PHASE+PHASE_END)
	e1:SetCountLimit(1)
	e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
	e1:SetLabel(fid)
	e1:SetLabelObject(tc)
	e1:SetCondition(s.descon)
	e1:SetOperation(s.desop)
	Duel.RegisterEffect(e1,tp)
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	local tc=e:GetLabelObject()
	if tc:GetFlagEffectLabel(id)~=e:GetLabel() then
		e:Reset()
		return false
	else return true end
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Destroy(e:GetLabelObject(),REASON_EFFECT)
end
function s.cond(e)
	return e:GetHandler():IsDefensePos()
end