Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Activate 1 of these effects; ● Gain 1200 LP. ● Inflict 800 damage to your opponent.
--ご隠居の猛毒薬
--Poison of the Old Man
local s,id=GetID()
function s.initial_effect(c)
	--rec or dam
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	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 true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EFFECT)
	local op=Duel.SelectOption(tp,aux.Stringid(id,0),aux.Stringid(id,1))
	e:SetLabel(op)
	if op==0 then
		e:SetCategory(CATEGORY_RECOVER)
		Duel.SetTargetPlayer(tp)
		Duel.SetTargetParam(1200)
		Duel.SetOperationInfo(0,CATEGORY_RECOVER,nil,0,tp,1200)
	else
		e:SetCategory(CATEGORY_DAMAGE)
		Duel.SetTargetPlayer(1-tp)
		Duel.SetTargetParam(800)
		Duel.SetOperationInfo(0,CATEGORY_DAMAGE,nil,0,1-tp,800)
	end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	if e:GetLabel()==0 then
		Duel.Recover(p,d,REASON_EFFECT)
	else Duel.Damage(p,d,REASON_EFFECT) end
end