Update design and validation allowedit field using x++

Update design and validation allowedit field using x++ :

void updateDesign()

 {

            FormDataObject  fldItemName;

            ;

            if(GG_FPJVoucher::Find(GG_FPJTable.FPJVoucherId).bit_batal == Noyes::Yes)

            {

                GG_FPJTable_FPJVoucherId.allowEdit(false);

            }

            if(GG_FPJVoucher::Find(GG_FPJTable.FPJVoucherId).bit_batal == Noyes::No)

            {

                GG_FPJTable_FPJVoucherid.allowEdit(true);

            }

 }