Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All Machine monsters on the field gain 200 ATK. Each time a face-up Machine monster(s) on the field is destroyed by battle or card effect, place 2 Junk Counters on this card. You can send this card to the GY, then target 1 Machine monster in your GY whose Level is less than or equal to the number of Junk Counters that were on this card; Special Summon that target.
--マシン・デベロッパー
--Machine Assembly Line
local s,id=GetID()
function s.initial_effect(c)
	c:EnableCounterPermit(0x1d)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--atk up
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e2:SetTarget(aux.TargetBoolFunction(Card.IsRace,RACE_MACHINE))
	e2:SetValue(200) 
	c:RegisterEffect(e2)
	--add counter
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetRange(LOCATION_SZONE)
	e3:SetCode(EVENT_DESTROYED)
	e3:SetCondition(s.ctcon)
	e3:SetOperation(s.ctop)
	c:RegisterEffect(e3)
	--special summon
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e4:SetType(EFFECT_TYPE_IGNITION)
	e4:SetRange(LOCATION_SZONE)
	e4:SetCost(s.spcost)
	e4:SetTarget(s.sptg)
	e4:SetOperation(s.spop)
	c:RegisterEffect(e4)
end
s.counter_list={0x1d}
function s.ctfilter(c)
	return c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousPosition(POS_FACEUP) and (c:GetPreviousRaceOnField()&RACE_MACHINE)~=0
end
function s.ctcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.ctfilter,1,nil)
end
function s.ctop(e,tp,eg,ep,ev,re,r,rp)
	e:GetHandler():AddCounter(0x1d,2)
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsAbleToGraveAsCost() end
	e:SetLabel(e:GetHandler():GetCounter(0x1d))
	Duel.SendtoGrave(e:GetHandler(),REASON_COST)
end
function s.filter(c,e,tp,lv)
	return c:IsLevelBelow(lv) and c:IsRace(RACE_MACHINE) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_GRAVE) and s.filter(chkc,e,tp,e:GetLabel()) 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,e:GetHandler():GetCounter(0x1d)) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp,e:GetLabel())
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
	end
end