Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 face-up monster on the field; place it face-up in its owner's Spell & Trap Zone as a Continuous Spell. You can only activate 1 "Sinful Spoils of Subversion - Snake-Eye" per turn.
--反逆の罪宝－スネークアイ
--Sinful Spoils of Subversion - Snake-Eye
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Place 1 face-up monster in its owner's Spell/Trap Zone
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.tgfilter(c,tp,hand_chk)
	if c:IsFacedown() then return false end
	local owner=c:GetOwner()
	local ft=Duel.GetLocationCount(owner,LOCATION_SZONE)
	if owner==tp and hand_chk then ft=ft-1 end
	return ft>0
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	local hand_chk=e:GetHandler():IsLocation(LOCATION_HAND)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and s.tgfilter(chkc,tp,hand_chk) end
	if chk==0 then return Duel.IsExistingTarget(s.tgfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil,tp,hand_chk) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,s.tgfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil,tp,hand_chk)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if not (tc:IsRelateToEffect(e) and not tc:IsImmuneToEffect(e)) then return end
	if Duel.GetLocationCount(tc:GetOwner(),LOCATION_SZONE)==0 then
		Duel.SendtoGrave(tc,REASON_RULE,nil,PLAYER_NONE)
	elseif Duel.MoveToField(tc,tp,tc:GetOwner(),LOCATION_SZONE,POS_FACEUP,tc:IsMonsterCard()) then
		--Treated as a Continuous Spell
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_CHANGE_TYPE)
		e1:SetValue(TYPE_SPELL|TYPE_CONTINUOUS)
		e1:SetReset(RESET_EVENT|(RESETS_STANDARD&~RESET_TURN_SET))
		tc:RegisterEffect(e1)
	end
end