cl_gui_docking_container in background

[ifat_bar]

Hello,

We are using UI5 in order to create word document.

we used class i_oi_container_control method init control.

CALL METHOD lo_control->init_control
EXPORTING
r3_application_name = 'R/3 Basis'
inplace_enabled = lv_inplace
inplace_scroll_documents = 'X'
parent = lo_container
register_on_close_event = 'X'
register_on_custom_event = 'X'
no_flush = 'X'.

the lo_container was from type cl_gui_custom_container, because it cannot work in background or from UI5 we changed it to class cl_gui_docking_container, but the object from the docking class is not created properly , we get exception create error.

please if anyone has a way to work it out, it will be graet/

Kind regards

Yifat Bar