Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Each face-up monster your opponent controls loses 100 ATK x its own Level.
--強者の苦痛
--Burden of the Mighty
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--atk down
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetRange(LOCATION_SZONE)
	e2:SetTargetRange(0,LOCATION_MZONE)
	e2:SetValue(s.val)
	c:RegisterEffect(e2)
end
function s.val(e,c)
	return c:GetLevel()*-100
end