-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {


  UITableViewCell *row = [tableView dequeueReusableCellWithIdentifier:@"TICKET_ITEM"];
  UILabel *itemDiscount = (UILabel *)[row viewWithTag:502];
  itemDiscount.text = [[arrayOfItem objectAtIndex:indexPath.row]TICKET_ITEM_DISCOUNT];

    return row;
}

indexOfObject:

indexOfObjectPassingTest:

NSMutableArray *temp = [arrayOfItem mutableCopy];
//update your value here
arrayOfItem = temp;