Is it possible to enable filters in the display methods

Dear all,

In inventory management -->inquires–>onhand.

in this form item name is comming form inventsum Table itemname( ) method.now my requirement is in onhand form item name field -->when i press the right click only setup and hide are coming due to the method ,record info are comming.but i want filter by field option .

is it possible or not for this scenario.?[:(]

It is not possible to filter display methods.