FPM error message- Not able to highlight field

Hi Experts,

I have got a strange problem in my OIF application. I am raising errors by writing code inside my feeder class for form GUIBB.

I am doing it the 'usual' way which is by modifying the changing parameter et_masseges.

The error is coming all right but the respective field is not getting highlighted. The below code I have used..

CLEAR lwa_message..

lwa_message-msgid = c_msgid1.     "Invalid entry'.

lwa_message-msgno = c_msgno10.                    "010..

lwa_message-severity = c_error. "'E'..

lwa_message-ref_name = 'DESCSHRT'..

APPEND lwa_message TO et_messages..

I have used the parameter ref_name where  'DESCSHRT' is the field name but still the field is not getting highlighted.

Is there anything I am missing..?

Many thanks in advance.

Saikat