Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is activated: You can add 1 "Infinitrack" monster from your Deck to your hand. Once per turn: You can target 1 Machine Xyz Monster you control, then activate 1 of these effects; ● Change its battle position. ● Attach this card to it as material. You can only activate 1 "Heavy Forward" per turn.
--超重機回送
--Heavy Forward
--Scripted by King Yamato
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--Activate 1 of these effects
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1)
	e2:SetTarget(s.efftg)
	e2:SetOperation(s.effop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_INFINITRACK}
function s.thfilter(c)
	return c:IsSetCard(SET_INFINITRACK) and c:IsMonster() and c:IsAbleToHand()
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	--Search 1 "Infinitrack" monster
	local g=Duel.GetMatchingGroup(s.thfilter,tp,LOCATION_DECK,0,nil)
	if #g>0 and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
		local sg=g:Select(tp,1,1,nil)
		Duel.SendtoHand(sg,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,sg)
	end
end
function s.tgfilter(c,mc,tp)
	return c:IsFaceup() and c:IsType(TYPE_XYZ) and c:IsRace(RACE_MACHINE) and (c:IsCanChangePosition() or mc:IsCanBeXyzMaterial(c,tp,REASON_EFFECT))
end
function s.efftg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local c=e:GetHandler()
	local label=e:GetLabel()
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.tgfilter(chkc,c,tp)
		and ((label==1 and chkc:IsCanChangePosition()) or (label==2 and c:IsCanBeXyzMaterial(chkc,tp,REASON_EFFECT))) end
	if chk==0 then return Duel.IsExistingTarget(s.tgfilter,tp,LOCATION_MZONE,0,1,nil,c,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	local tc=Duel.SelectTarget(tp,s.tgfilter,tp,LOCATION_MZONE,0,1,1,nil):GetFirst()
	local b1=tc:IsCanChangePosition()
	local b2=c:IsCanBeXyzMaterial(tc,tp,REASON_EFFECT)
	local op=Duel.SelectEffect(tp,
		{b1,aux.Stringid(id,2)},
		{b2,aux.Stringid(id,3)})
	e:SetLabel(op)
	if op==1 then
		e:SetCategory(CATEGORY_POSITION)
		Duel.SetOperationInfo(0,CATEGORY_POSITION,tc,1,tp,0)
	else
		e:SetCategory(0)
	end
end
function s.effop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if not tc:IsRelateToEffect(e) or tc:IsImmuneToEffect(e) then return end
	local op=e:GetLabel()
	local c=e:GetHandler()
	if op==1 then
		--Change its battle position
		Duel.ChangePosition(tc,POS_FACEUP_DEFENSE,0,POS_FACEUP_ATTACK,0)
	elseif op==2 and c:IsRelateToEffect(e) and c:IsCanBeXyzMaterial(tc,tp,REASON_EFFECT) then
		--Attach this card to it as material
		Duel.Overlay(tc,c)
	end
end