Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can Tribute this face-up Defense Position card to Special Summon 2 Level 3 or lower Dragon-Type monsters: 1 from your hand, and 1 from your Graveyard.
--ラヴァ・ドラゴン
--Lava Dragon
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:SetRange(LOCATION_MZONE)
	e1:SetCost(s.spcost)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsDefensePos() and e:GetHandler():IsReleasable() end
	Duel.Release(e:GetHandler(),REASON_COST)
end
function s.filter(c,e,tp)
	return c:IsLevelBelow(3) and c:IsRace(RACE_DRAGON) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if e:GetHandler():GetSequence()<5 then ft=ft+1 end
	if chk==0 then return ft>1 and not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_HAND,0,1,nil,e,tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,2,tp,LOCATION_HAND|LOCATION_GRAVE)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then return end
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<2 then return end
	local g1=Duel.GetMatchingGroup(s.filter,tp,LOCATION_HAND,0,nil,e,tp)
	local g2=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.filter),tp,LOCATION_GRAVE,0,nil,e,tp)
	if #g1==0 or #g2==0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local sg1=g1:Select(tp,1,1,nil)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local sg2=g2:Select(tp,1,1,nil)
	sg1:Merge(sg2)
	Duel.SpecialSummon(sg1,0,tp,tp,false,false,POS_FACEUP)
end