How to get table Section cell when selecting button?

-(void)btnClicked:(UIButton*)sender{ UIButton *clickedButton = (UIButton*)sender; NSLog(@"section Button tag : %ld", (long)clickedButton.tag); CommenstList *comments = [filteredArray objectAtIndex:clickedButton.tag]; CommentsCell *tapedCell = (CommentsCell*)[self.tableView headerViewForSection:clickedButton.tag]; [tapedCell updateHeightForViewWhenTapThreeDots:[comments getCommentText]]; } tapedCell object is nil when i fetch section index.