dates problem in query ( customer exit code)

Hi all,

There is a requirement to display the data every month( only monthly data Ex:- 07/2007) up to 24 months from sy-datum. For these we have one customer exit but in that result some value (Ex- (mm/yyyy format) 07/2007, 07/2007) are repeated.

In query level 07/2007 month 2 times repeated. we are using 24 user exit variables.

I debugged that code.. if date wise is ok when we saw monthly wise repeated.

can any body give me inputs.... sample code

very urgent rquirement

raj