Requesting for a BEX Report query assistance while designing.

Hi Team,

While designing an HR Head count report, I've an requirement as shown in the Screen Shot below.

So, Actual requirement is i need to maintain, Closing Head count of previous month to be an opening head count of the next month.

Closing Head count:-it is based on selection showed in the screenshot Below

Joinee:- it is based on selection showed in the screenshot below

Resignee:- it is based on selection showed in the screenshot below

Transfer In:- it is based on selection showed in the screenshot below

Transfer Out is based on the ABAP/4 code return at the End Routine Level that is mentioned below.

l_date = wa_result-CALDAY + 1. " get start date for next transfer

READ TABLE it_psa into wa_psa WITH KEY

pernr = wa_result-EMPLOYEE

CALDAY = l_date      " check start date

massn = '07'.

if sy-subrc = '0'.

   if wa_psa-massg = '02' or wa_psa-massg = '01'.

   wa_result-/bic/ZHDCNTTRA = '1'.

So, Kindly some one help how to keep the Opening Head of next month will be an closing head count of the previous month.

Thanks & Regards.

P Sriram