[Freeswitch-users] dynamic sip_profile

Hi, I am using switch_xml_bind_search_function(my_dir_func, switch_xml_parse_setting_string("directory"), NULL); to dynamically generate directory data using odbc. I want to do the same thing for gateway so that I can have the gateway info stored in DB. What setting string should I use? Is there any example showing how to do it? thanks, jb