Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you control a face-up "Genex Controller", you can Normal Summon this card without Tributing.
--ジェネクス・ヒート
--Genex Furnace
local s,id=GetID()
function s.initial_effect(c)
	--summon with no tribute
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_SUMMON_PROC)
	e1:SetCondition(s.ntcon)
	c:RegisterEffect(e1)
end
s.listed_names={68505803}
function s.ntfilter(c)
	return c:IsFaceup() and c:IsCode(68505803)
end
function s.ntcon(e,c,minc)
	if c==nil then return true end
	return minc==0 and c:GetLevel()>4 and Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.ntfilter,c:GetControler(),LOCATION_MZONE,0,1,nil)
end