hi 1. i want to change contact address .i want to add transport protocol how can i do this ? 2. i am getting Error on $var(query) = "INSERT INTO sip_user(sipuser) VALUES(' "+$fU+"' )"; if(!avp_db_query("$var(query)","$avp(s:test)")){ xlog("ERROR IN Query = $var(query)"); sl_send_reply("400","Bad Request"); exit; } but if i run that query in mysql it give me expected output. why i am getting error ? pls help me ? any suggestion is appreciated. thanks