Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is Normal Summoned: Choose 1 unused Main Monster Zone; this card gains the following effect. ● The chosen zone cannot be used. * The above text is unofficial and describes the card's functionality in the OCG.
--氷結界に住む魔酔虫
--Numbing Grub in the Ice Barrier
local s,id=GetID()
function s.initial_effect(c)
	--dis field
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_SUMMON_SUCCESS)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE,PLAYER_NONE,0)<=0 and Duel.GetLocationCount(1-tp,LOCATION_MZONE,PLAYER_NONE,0)<=0 then return end
	--disable field
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_DISABLE_FIELD)
	e1:SetOperation(s.disop)
	e1:SetReset(RESET_EVENT|RESETS_STANDARD_DISABLE)
	e:GetHandler():RegisterEffect(e1)
end
function s.disop(e,tp)
	local dis1=Duel.SelectDisableField(tp,1,LOCATION_MZONE,LOCATION_MZONE,0)
	return dis1
end