Article 337 of Civil Code

1 - An option to designate requires specification of the period within which the option may be exercised. If the option is granted without a period, the court shall specify an appropriate period at either party's request. 2 - If the option belongs to the debtor and he refrains from choosing, or there are several debtors and they fail to agree among themselves, the creditor may ask the court itself to designate the subject matter of the obligation. If the option belongs to the creditor and he refrains from choosing, or there are several creditors and they fail to agree among themselves, the option shall pass to the debtor.