Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
The activation of LIGHT monsters' effects cannot be negated.
--神星なる領域
--Constellar Belt
local s,id=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--inactivatable
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_CANNOT_INACTIVATE)
	e2:SetRange(LOCATION_SZONE)
	e2:SetValue(s.efilter)
	c:RegisterEffect(e2)
end
function s.efilter(e,ct)
	local te=Duel.GetChainInfo(ct,CHAININFO_TRIGGERING_EFFECT)
	local tc=te:GetHandler()
	return te:IsMonsterEffect() and tc:IsAttribute(ATTRIBUTE_LIGHT)
end