Popup window in CRM_UI

Hello,

i managed to implement a popup window when the "Save document" button is pressed. The user answer on the popup determines a certain action when saving.

Problem:

The popup window is not shown immediately, but only after all the events are processed.

Tell me please, what should i do so that the popup window would be shown immediately when the code is compiled ?

Here is the code for popup window:

  CALL METHOD comp_controller->window_manager->create_popup_2_confirm
    EXPORTING
      iv_title          = lv_save
      iv_text           = lv_text
      iv_btncombination = if_bsp_wd_window_manager=>co_btncomb_yesnocancel
    RECEIVING
      rv_result         = confirm_popup.

  confirm_popup->set_on_close_event( iv_event_name = 'TAKSA_UPDATE_POPUP_TODO'
                                     iv_view       = me ).

  confirm_popup->open( ).

Thank you !