Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card requires a cost of 1000 of your own Life Points to attack.
--ダーク・エルフ
--Dark Elf
local s,id=GetID()
function s.initial_effect(c)
	--attack cost
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_ATTACK_COST)
	e1:SetCost(s.atcost)
	e1:SetOperation(s.atop)
	c:RegisterEffect(e1)
end
function s.atcost(e,c,tp)
	return Duel.CheckLPCost(tp,1000)
end
function s.atop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.IsAttackCostPaid()~=2 and e:GetHandler():IsLocation(LOCATION_MZONE) then
		Duel.PayLPCost(tp,1000)
		Duel.AttackCostPaid()
	end
end