Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can select and activate 1 of the following effects: ● Increase the ATK of all face-up monsters on your side of the field by 200 points until the End Phase of the turn this card is activated. ● Increase the DEF of all face-up monsters on your side of the field by 500 points until the End Phase of the turn this card is activated.
--ピラミッドパワー
--Pyramid Energy
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:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_FREE_CHAIN)
	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)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsFaceup,tp,LOCATION_MZONE,0,1,nil) end
	local op=Duel.SelectOption(tp,aux.Stringid(id,0),aux.Stringid(id,1))
	e:SetLabel(op)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil)
	if #g==0 then return end
	if e:GetLabel()==0 then
		local sc=g:GetFirst()
		for sc in aux.Next(g) do
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_UPDATE_ATTACK)
			e1:SetReset(RESETS_STANDARD_PHASE_END)
			e1:SetValue(200)
			sc:RegisterEffect(e1)
		end
	else 
		local sc=g:GetFirst()
		for sc in aux.Next(g) do
			local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_UPDATE_DEFENSE)
			e1:SetReset(RESETS_STANDARD_PHASE_END)
			e1:SetValue(500)
			sc:RegisterEffect(e1)
		end
	end
end