Wieso ist die globale Tabelle gt_obj leer?

Code: Alles auswählen.

FORM display_tree.

  DATA: lt_nodes  TYPE TABLE OF snodetext,
        ls_node   TYPE snodetext,
        l_cprog   LIKE sy-cprog,

        ls_ag     TYPE gy_ag,
        ls_obj    TYPE gy_object.


* Ebene 01 ist die Überschrift
  CLEAR: ls_node.
  ls_node-name = 'Massenpflege'.
  ls_node-text = text-003.
  ls_node-tlength = '12'.
  ls_node-tcolor  = '4'.
  ls_node-tlevel = '01'.
  APPEND ls_node TO lt_nodes.

  BREAK-POINT.
* Ebene 02 ist der Name der Rolle
  LOOP AT gt_agr INTO ls_ag.
    CLEAR: ls_node.
    ls_node-name    = ls_ag-ag.
    ls_node-text    = ls_ag-ag.
    ls_node-tlength = '30'.
    ls_node-tcolor  = '1'.
    ls_node-tlevel  = '02'.

    LOOP AT gt_obj INTO ls_obj.
      CLEAR: ls_node.
      ls_node-name       = ls_obj-object.
      ls_node-tlevel     = '03'.
      ls_node-text       = '@18@'.
      ls_node-tlength    = '4'.
      ls_node-hotspot    = 'X'.
      ls_node-text1      = ls_obj-object.
      ls_node-tlength1   = '10'.
      ls_node-tcolor1    = '5'.
      ls_node-tintensiv1 = ''.

      APPEND ls_node TO lt_nodes.

    ENDLOOP. " gt_obj.

    APPEND ls_node TO lt_nodes.
  ENDLOOP. " gt_agr

  CALL FUNCTION 'RS_TREE_CONSTRUCT'
*      EXPORTING
*           INSERT_ID          = '000000'
*           RELATIONSHIP       = ' '
*           LOG                =
       TABLES
            nodetab            = lt_nodes
       EXCEPTIONS
            tree_failure       = 1
            id_not_found       = 2
            wrong_relationship = 3
            OTHERS             = 4.

  SET PF-STATUS 'LD_TREE'.

  l_cprog = sy-cprog.
  CALL FUNCTION 'RS_TREE_LIST_DISPLAY'
    EXPORTING
      callback_program      = l_cprog
      callback_user_command = 'ON_UCOMM_TREE'.
*             CALLBACK_TEXT_DISPLAY     =
*             CALLBACK_MOREINFO_DISPLAY =
*             CALLBACK_COLOR_DISPLAY    =
*             CALLBACK_TOP_OF_PAGE      =
*             CALLBACK_GUI_STATUS       =
*             CALLBACK_CONTEXT_MENU     =
*             STATUS                    = 'IMPLICIT'
*             CHECK_DUPLICATE_NAME      = '1'
*             COLOR_OF_NODE             = '4'
*             COLOR_OF_MARK             = '3'
*             COLOR_OF_LINK             = '1'
*             COLOR_OF_MATCH            = '5'
*             LOWER_CASE_SENSITIVE      = ' '
*             MODIFICATION_LOG          = ' '
*             NODE_LENGTH               = 30
*             TEXT_LENGTH               = 75
*             TEXT_LENGTH1              = 0
*             TEXT_LENGTH2              = 0
*             RETURN_MARKED_SUBTREE     = ' '
*             SCREEN_START_COLUMN       = 0
*             SCREEN_START_LINE         = 0
*             SCREEN_END_COLUMN         = 0
*             SCREEN_END_LINE           = 0
*             SUPPRESS_NODE_OUTPUT      = ' '
*             LAYOUT_MODE               = ' '
*             USE_CONTROL               = STREE_USE_LIST
*        IMPORTING
*             F15                       =

ENDFORM.                    " display_tree

Code: Alles auswählen.

DATA:
* Tabelle mit allen selektierten Daten
  gt_agr TYPE gyt_ag,
  gt_obj TYPE gyt_object,
  gt_fld TYPE gyt_field,
  gt_val TYPE gyt_value.