Dropdown - issue with passing values to context

Question

Hi,
After facing issue in:
Webdynpro + alv + dynamic dropdown
Now I've encountered another problem. Dropdown is created in alv, however once user select value from the list it shows selected value in the cell, however value in context remains unchanged.
Here is the way I implemented dropdown:
1) I added new field to the structure which is shown in the alv FIELD1 of WDR_CONTEXT_ATTR_VALUE_LIST type.
2) I initialize the column, where dropdown is supposed to be:
- first column
l_col_name = 'COL1'.
lr_column = lr_model->if_salv_wd_column_settings~get_column( l_col_name ).
DATA: lr_drdn_by_idx_col1 TYPE REF TO cl_salv_wd_uie_dropdown_by_idx.
CREATE OBJECT lr_drdn_by_idx_col1 EXPORTING selected_key_fieldname = l_col_name.
lr_drdn_by_idx_col1->set_valueset_fieldname( value = 'FIELD1' ).
lr_drdn_by_idx_col1->set_read_only( value = abap_false ).
lr_drdn_by_idx_col1->set_type( if_salv_wd_c_uie_drdn_by_index=>type_key_value ).
lr_column->set_cell_editor( lr_drdn_by_idx_col1 ).
3) I load the data,
Piece of code loading data into structure with dropdown:
DATA:  ls_valueset     TYPE wdr_context_attr_value,
            lt_itab         LIKE TABLE OF ls_line.
      ls_valueset-value = 'KG'.
      ls_valueset-text = 'KG'.
      APPEND ls_valueset TO lt_itab[].
      ls_valueset-value = 'ST'.
      ls_valueset-text = 'ST'.
      APPEND ls_valueset TO lt_itab[].
zstructure is type of the row show in the alv
Data:
     ls_po_result TYPE zstructure.
     lt_po_result TYPE table of zstructure.
     ls_po_result-FIELD1[] = lt_itab[].
     APPEND ls_po_result TO lt_po_result[].
Everything works so far good. The thing is that once I changed value from e.g. ST to KG, value in Attribute COL1 is still ST.
I would appreciate your help,
kind regards,
Adam

Answer 1

Hi Nithya,
it could another issue with the SP, I will inform you if it's the case.
Passing values comes up with function when I load data into alv.
structure_name - alv columns structure
DATA: l_name1        TYPE t001w-name1,
          ls_po_result   TYPE structure_name
          lt_po_result   TYPE table of structure_name,
load data from DB into l_itab
  LOOP l_itab  AT ASSIGNING item.
this method return value_set to field1
    CALL METHOD fill_single_dd
      EXPORTING
        i_id     = item-id
      IMPORTING
        rt_dd_table = ls_po_result-field1[].
    APPEND ls_po_result TO lt_po_result[].
  ENDLOOP.
binding to node ....