Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 face-up monster you control and 1 face-up monster your opponent controls; the ATK of the first target becomes equal to the original ATK of the second target, until the end of this turn.
--極星宝ブリージンガ・メン
--Nordic Relic Brisingamen
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetHintTiming(TIMING_DAMAGE_STEP)
	e1:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return false end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,LOCATION_MZONE,0,1,nil)
		and Duel.IsExistingTarget(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SELF)
	local g1=Duel.SelectTarget(tp,Card.IsFaceup,tp,LOCATION_MZONE,0,1,1,nil)
	e:SetLabelObject(g1:GetFirst())
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_OPPO)
	Duel.SelectTarget(tp,Card.IsFaceup,tp,0,LOCATION_MZONE,1,1,nil)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetChainInfo(0,CHAININFO_TARGET_CARDS)
	local tc=g:GetFirst()
	local sc=g:GetNext()
	if tc:IsFacedown() or not tc:IsRelateToEffect(e) 
		or sc:IsFacedown() or not sc:IsRelateToEffect(e) then return end
	local ac=e:GetLabelObject()
	if tc==ac then tc=sc end
	local atk=tc:GetBaseAttack()
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SET_ATTACK_FINAL)
	e1:SetValue(atk)
	e1:SetReset(RESETS_STANDARD_PHASE_END)
	ac:RegisterEffect(e1)
end