Call a URL on click of a button

Hi Experts,

I am new to Webdynpro. Your support required.

The requirement is to go to a link on call of a button. I have found my links on the same and the code is working fine.

   data lo_api_component type ref to if_wd_component.

   data lo_window_manager type ref to if_wd_window_manager.

   data lo_window type ref to if_wd_window.

   lo_api_component = wd_comp_controller->wd_get_api( ).

   lo_window_manager = lo_api_component->get_window_manager( ).

   CALL METHOD lo_window_manager->create_external_window

     EXPORTING

       url            = 'http://www.google.com'

     receiving

       window         = lo_window.

     lo_window->open( ).

I want to learn how to call the above code from wizard/pattern?

Regards

Mani