WebDynpro Popup

Hello there,

I'm new in SAP, and I have a problem with my popup.

Each time a user selects a value from a dropdown, a popup must appear, I could do this, but the popup I get is empty

Here is how I create my popup:

l_cmp_api = wd_comp_controller->wd_get_api( ).

l_window_manager = l_cmp_api->get_window_manager( ).

l_popup = l_window_manager->create_popup_to_confirm(

text = l_text

button_kind = if_wd_window=>co_buttons_okcancel

message_type = if_wd_window=>co_msg_type_warning

• close_button = 'X'

window_title = 'Warning'

window_position = if_wd_window=>co_center ). "#EC *

l_api = wd_this->wd_get_api( ).

Can someone tell me how I can fix it?!

Thank you,

K