A petition authorized in subsection (a) of Code Section 19-6-19 can be filed only where a party has been ordered by the final judgment in an alimony or divorce and alimony action to pay permanent alimony in weekly, monthly, annual, or similar periodic payments and not where the former spouse of such party, the child or children, or both, have been given an award from the corpus of the party's estate in lieu of such periodic payment.