POV..FIELD <fieldname ??>

Hi All,

I am using ABAP objects to display an internal table. Table consists of following field:

filename type localfile,

add type c,

delete type c.

I have added F4 button on the field 'Filename' using fieldcatalog field 'f4availabl'...On press of the F4 button, i want to call function module 'F4_FILENAME'.

My problem is: In the POV, FIELD <fieldname on the screen> MODULE F4_GET, What should be the fieldname of the screen, so that this statement works or every row in the table control?

Thanks & Regards,

Srinivas Rao