4. 9. In suspensive condition, rights are not yet acquired, but there is a hope or expectancy that they will soon be acquired. In suspensive condition, rights are already acquired, but subject to the threat of extinction. If the fulfilment of a potestative obligation depends exclusively upon the will of the debtor, the conditional obligation shall be void. If the fulfilment of a potestative obligation depends exclusively upon the will of the creditor, the conditional obligation shall be void. The power to rescind obligations is implied in reciprocal ones in case one of the obligors should not comply with what is incumbent upon him. A condition has for its requisitES futurity and uncertainty. 10. A term or period has for its requisites futurity and uncertainty