Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn, during your Standby Phase: Special Summon 1 "Slime Token" (Aqua/WATER/Level 1/ATK 500/DEF 500) in Attack Position. You cannot Summon any monsters, except "Slime Tokens" (but you can Set).
--スライム増殖炉
--Jam Breeding Machine
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)
	--special summon token
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e2:SetCode(EVENT_PHASE|PHASE_STANDBY)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1)
	e2:SetCondition(s.spcon)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--summon limit
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD)
	e3:SetRange(LOCATION_SZONE)
	e3:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e3:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e3:SetTargetRange(1,0)
	e3:SetTarget(s.sumlimit)
	c:RegisterEffect(e3)
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD)
	e4:SetRange(LOCATION_SZONE)
	e4:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e4:SetCode(EFFECT_CANNOT_SUMMON)
	e4:SetTargetRange(1,0)
	c:RegisterEffect(e4)
	local e5=e4:Clone()
	e5:SetCode(EFFECT_CANNOT_FLIP_SUMMON)
	c:RegisterEffect(e5)
end
s.listed_names={TOKEN_SLIME}
function s.sumlimit(e,c,sump,sumtype,sumpos,targetp,se)
	return not c:IsCode(TOKEN_SLIME)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsTurnPlayer(tp)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():IsRelateToEffect(e) and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsPlayerCanSpecialSummonMonster(tp,TOKEN_SLIME,0x54b,TYPES_TOKEN,500,500,1,RACE_AQUA,ATTRIBUTE_WATER) then
		local token=Duel.CreateToken(tp,TOKEN_SLIME)
		Duel.SpecialSummon(token,0,tp,tp,false,false,POS_FACEUP_ATTACK)
	end
end