I need to add a custom row below grand total row. I have tried code from
It adds custom row but above grand total. I have tried to add a large value to tag totals_sort in config.xml but it is not working.
Also when I pass value for custom row it is formatted to amount with store currency. Like if I pass value as 100 then in totals section it will be shown as $100. But I need to show it as 100 ABC
Please see screen shot below.