Calling Transaction Launcher From Event Handler

Hi all,

I have created a logical link, an URL ID, configured transaction launcher. I called the transaction launcher from an event handler as the codes below:

DATA: lr_navigation TYPE REF TO if_crm_ui_navigation_service.
DATA: lr_controller TYPE REF TO zl_ui_impl.


 lr_navigation = cl_crm_ui_navigation_service=>get_instance( lr_controller ).
 lr_navigation->navigate( iv_link_id = 'ZLAUNCHER' ).

After I called the transaction launcher, the screen on webui was not changed to the GUI loading screen. It was working previously.

Please let me know if you have any idea how to solve this.

Thanks.

Jeremy