Program has to be trigger only for particular field.

Hi,

(Note: I am not asking about search help filtration )

I have one questions. I had written one code. for T-code  FS00.  When ever i press the f4_help for Gl_account i had written some logic.

It is working fine.Like below.

IF SY-TCODE EQ 'FS00'.

IF SY-UNAME EQ 'USER01'.

" I had written the logic.

ENDIF.

ENDIF.

But the above code is triggering , Other fields are also having f4_help not same different fields, fetching data from different tables,

My question is program has to be trigger only for particular screen field. I think i need to written one more if condition. That is also i tried like below.

Then i added the below code like.

LOOP AT SCREEN.

if screen-field = 'SANKR'.

ENDLOOP.

If i activate the program the below error i am getting.

Then i open the screen painter for this program in se51  then i got the screen name of the field, then i changed to

if screen-field = SAPLGL_ACCOUNT_MASTER_MAINTAIN.

Still i am getting the same error. Can any body tell me how could i do the validation for particular field.