Customer Exit From 0calmonth to 0calday.

Hi All,

I have created a customer exit for 0calday and a manual input variable for 0calmonth.

My requirement is if I enter 0calmonth  for ex:11.2010 as a parameter then

I should get the data for  26.10.2010 to 25.11.2010. i.e., previous month 26 to current month 25.

Is it possible?

Are there any standard function modules for this kind of combination?

If possible how do I proceed.

Tried a few combinations but did not work.

I am working on BW 7.3

Thanks.