Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 monsters Once per turn: You can detach 1 Xyz Material from this card, then target 1 face-up monster your opponent controls; destroy it, unless your opponent pays 1000 LP to negate this effect.
--No.44 白天馬スカイ・ペガサス
--Number 44: Sky Pegasus
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon Procedure
	Xyz.AddProcedure(c,nil,4,2)
	--Destroy 1 face-up monster your opponent controls
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(Cost.DetachFromSelf(1,1,nil))
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
s.xyz_number=44
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(1-tp) and chkc:IsFaceup() end
	if chk==0 then return Duel.IsExistingTarget(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,Card.IsFaceup,tp,0,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.CheckLPCost(1-tp,1000) and Duel.SelectYesNo(1-tp,aux.Stringid(id,1)) then
		Duel.PayLPCost(1-tp,1000)
		if Duel.IsChainDisablable(0) then
			Duel.NegateEffect(0)
		end
	else
		local tc=Duel.GetFirstTarget()
		if tc:IsFaceup() and tc:IsRelateToEffect(e) then
			Duel.Destroy(tc,REASON_EFFECT)
		end
	end
end