Short dump in Search Guibb

HI,

i have been getting the following short dump , when im configuring my Search guibb , in the search guibb configuration , when i click on 'Edit Search Attributes' , and transfer the field from 'Available Search criteria' to 'Selected search criteria' i get the following short dump.

Here i click on 'Edit Search Attributes'.

Here when i click 'OK' .. i get the below short dump.

This is my feeder class code.

PUBLIC SECTION.

types:     begin of ty_search,         id type zstudent-DEPT,           end of ty_search .   types:     BEGIN OF ty_result,           name type zstudent-name,           marks type zstudent-marks,           dept type zstudent-dept,         END OF ty_result .   data LS_SEARCH type TY_SEARCH .   data:     lt_search type TABLE OF ty_search .   data LS_RESULT type TY_RESULT .   data:     lt_result type TABLE OF ty_result .   data:     lt_temp type STANDARD TABLE OF zstudent .   data MO_FIELD_CATALOG_ATTR type ref to CL_ABAP_STRUCTDESCR .

METHOD: GET_DEFINITION.

   eo_field_catalog_attr ?= cl_abap_structdescr=>describe_by_data( ls_search ).   eo_field_catalog_result ?= cl_abap_tabledescr=>describe_by_data( lt_result ).   mo_field_catalog_attr = eo_field_catalog_attr.   data ls_search_des type fpmgb_s_searchfield_descr.   data ls_result_des type fpmgb_s_searchresult_descr.   ls_search_des-name = 'ID'.   append ls_search_des to et_field_description_attr.   ls_result_des-name = 'NAME'.   append ls_result_des to et_field_description_result.   ls_result_des-name = 'MARKS'.   append ls_result_des to et_field_description_result.   ls_result_des-name = 'DEPT'.   append ls_result_des to et_field_description_result.

METHOD: PROCESS_EVENT

data lt_where type  rsds_where_tab.   if io_event->mv_event_id = if_fpm_guibb_search=>fpm_execute_search.       data ls_temp type zstudent.     TRY.     CALL METHOD CL_FPM_GUIBB_SEARCH_CONVERSION=>TO_ABAP_SELECT_WHERE_TAB       EXPORTING         IT_FPM_SEARCH_CRITERIA = it_fpm_search_criteria         IV_TABLE_NAME          = 'ZSTUDENT'         IO_FIELD_CATALOG       = mo_field_catalog_attr       IMPORTING         ET_ABAP_SELECT_TABLE   = lt_where         .      CATCH CX_FPMGB .     ENDTRY.     select * from zstudent into TABLE lt_temp where (lt_where).       loop at lt_temp into ls_temp.         MOVE-CORRESPONDING ls_temp to ls_result.         APPEND ls_result to lt_result.         endloop.     endif.

METHOD: GET_DATA

if io_event->mv_event_id = if_fpm_guibb_search=>fpm_execute_search.     et_result_list = lt_result.endif.