Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is in face-up Defense Position, destroy this card. This card must attack if able.
--怒れる類人猿
--Berserk Gorilla
local s,id=GetID()
function s.initial_effect(c)
	--must attack
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_MUST_ATTACK)
	c:RegisterEffect(e1)
	--destroy
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EFFECT_SELF_DESTROY)
	e3:SetCondition(s.descon)
	c:RegisterEffect(e3)
end
function s.descon(e)
	return e:GetHandler():IsDefensePos()
end