How to calculate YTD at infocube level.

Hi Experts,

I have one sales DSO in that i have sales data in detail level.

I want to load data to next target which is a infocube and i want to calculate YTD by using routine  not in query level.

I have check many treads all solutions are available to implement in query level only.

E.g

Company Code     GL Account     Fiscal period     Amount

1001                     2001               2014.06            100

1001                     2001               2014.06            100

1001                     2001               2014.07            100

FiscalPeriod     Amount     YTD

2014.06           200           200

2014.07           100           300

Please share some ABAP logic for this requirement.

Your help will be greatly appreciated.

Thanks,

Somesh.