Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 face-up monster on the field; until the end of this turn, that target loses 600 ATK, but cannot be targeted or destroyed by other card effects.
--禁じられた聖衣
--Forbidden Dress
local s,id=GetID()
function s.initial_effect(c)
	--Targeted monster loses 600 ATK, cannot be targeted or destroyed by card effects
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(TIMING_DAMAGE_STEP,TIMINGS_CHECK_MONSTER|TIMING_DAMAGE_STEP)
	e1:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,LOCATION_MZONE,1,1,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() then
		--Loses 600 ATK
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(-600)
		tc:RegisterEffect(e1)
		--Cannot be targeted or destroyed by card effects
		local e2=Effect.CreateEffect(c)
		e2:SetDescription(3009)
		e2:SetProperty(EFFECT_FLAG_CLIENT_HINT)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_CANNOT_BE_EFFECT_TARGET)
		e2:SetValue(1)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e2)
		local e3=Effect.CreateEffect(c)
		e3:SetType(EFFECT_TYPE_SINGLE)
		e3:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
		e3:SetValue(1)
		e3:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e3)
	end
end