Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 monsters During either player's turn, when a Level 5 or higher monster would be Special Summoned: You can detach 1 Xyz Material from this card; negate the Special Summon, and if you do, destroy it.
--インヴェルズ・ローチ
--Steelswarm Roach
local s,id=GetID()
function s.initial_effect(c)
	--xyz summon
	Xyz.AddProcedure(c,nil,4,2)
	c:EnableReviveLimit()
	--disable spsummon
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DISABLE_SUMMON+CATEGORY_DESTROY)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EVENT_SPSUMMON)
	e1:SetCondition(s.condition)
	e1:SetCost(Cost.DetachFromSelf(1))
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsLevelAbove(5)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetCurrentChain()==0 and eg:IsExists(s.filter,1,nil)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local g=eg:Filter(s.filter,nil)
	Duel.SetOperationInfo(0,CATEGORY_DISABLE_SUMMON,g,#g,0,0)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=eg:Filter(s.filter,nil)
	Duel.NegateSummon(g)
	Duel.Destroy(g,REASON_EFFECT)
end