Entity attrib_ref is getting initialised after lr_core1->modify( )

Hi all,

I have customised three fields in an assignment block and populated values in do_prepare_output. The values are getting populated in the custom fields and i can see them on the webui. But when i sort i get dump . Reason is the entity attrib_ref is initial. I found the dump is due to the non-updation of changes into BOL. I found lr_core->modify( ) is the solution to update the BOL framework.

After long debug i fould that manually using lr_core->modify( ) itself initialises the attrib_ref.

Below is the BOL code i use fr populating the values.

*" Employee Responsible-custom field

            CALL METHOD lr_entity_val->switch_to_change_mode( ).
            if  lr_entity_val->is_changeable( ) = abap_true.
            lr_entity_val->set_property( iv_attr_name = 'Z_EMPLOYEERESPONSIBLE' iv_value = lv_partner_descr ).
            ENDIF.

" Responsible Group-custom field
            if  lr_entity_val->is_changeable( ) = abap_true.
            lr_entity_val->set_property( iv_attr_name = 'Z_RESPONSIBLEGROUP' iv_value = lv_partner_descr ).
            ENDIF.
            CLEAR lv_partner_descr.
          call METHOD  lr_entity_val->get_property_as_value
                EXPORTING
                  iv_attr_name = 'Z_RESPONSIBLEGROUP'
                IMPORTING
                  ev_result    = lv_partner_descr.

**at this line i have values in lv_partner_descr that i pass in set_property
          CLEAR lv_partner_descr.
          lr_entity_val->activate_sending( ).
          lr_core1->modify( ).
          call METHOD  lr_entity_val->get_property_as_value
                EXPORTING
                  iv_attr_name = 'Z_RESPONSIBLEGROUP'
                IMPORTING
                  ev_result    = lv_partner_descr.

**this method call thows error since the attrib_ref is initail

**if i skip the above method call then the flow continues

            DATA: lv_transaction TYPE REF TO if_bol_transaction_context.
            lv_transaction = lr_core1->get_transaction( ).
            IF lv_transaction->check_save_needed( ) = abap_true         
              AND lv_transaction->check_save_possible( ) = abap_true.    
                lv_transaction->save( ).
                lv_transaction->commit( ).
                COMMIT WORK AND WAIT.
            ENDIF.

**always the above if condition is false and save and commit does not get execute

**save needed nd save possible are not true
            lr_entity_val ?= lr_coll->get_next( ).

          ENDWHILE.
       CATCH cx_root.

      ENDTRY.

The dump is getting raised at the below code during reread( ) while sorting

      if iv_entity->my_manager_entry is not bound or iv_entity->container_proxy is not bound.

        raise exception type cx_bol_exception

          exporting

            textid = cx_bol_exception=>entity_already_freed.

      endif.

If i use reread( ) after lr_core->modify( ) then exception throws since arrtib_ref is initial.

Please help me in this regard.

Regards,

Karthik