Usage of GG functions in Golden Gate replicate process

@DATENOW

I want to replicat only those records where abs_date column will consists records less than 2 years only from current date(i.e. now year is 2013 and so i want to fetch the records only till 2011). I am doing something like this, but getting error: 

Map XXXX,target XXXX,

colmap(A=A,

B=B)

,WHERE ( abs_date > @DATENOW - 731);

Getting error in report file as:  Error in WHERE clause. Column name not found.

Please let me know what can be modified to achieve the result.

Thanks in advance