My custom exit in search help is not triggering

Hi,

I am working with the transaction code CAT2 in HR module, Here I need to control the Attendance/ Absence type (AWART) based on the Data Entry Profile (TCATST-VARIANT) and Persanl Number (PERNR).

There is a search help (H_T554S) associated with this field ( AWART ).

I am trying to restrict the values in this search help using the Custom Exit, which I created and Assigned to this search help.

But, I am unable to restrict the values and my Exit is not tringgering while running the transaction CAT2.

can u advice me more on this ...

Thanks.....

Thirupathi