The court may grant a petition for modification that seeks to apply the changes. There are no forms on this website for modifying alimony. Appellate Division Clears Up The Alimony Statute Application. Durational Alimony in Florida Charles E Willmott PA. M Supplemental Petition to Modify Alimony Packet List. Chapter 20 section 50 expounds on the termination extension and modification The statute states as follows Rehabilitative alimony shall terminate upon the. Is not unconstitutionally retroactive because the statute does not attach.