Hi... I am sorry. Can someone help me. I have a field in table which is declared as udt - nmap_data frozen<nmap_data_element>. Type nmap_data_element also contains udt field - list<frozen <nmap_hostnames> > How do I write data to this table from python. I declare classes, tried to register through register_user_type, but it still does not work, it gives out "Invalid user type literal for nmap_data: field hostnames is not of type list<frozen<nmap_hostnames>>"