var fieldsArray = ['u_interface_id','u_interface_name','u_source_sat_name','u_target_sat_name','short_description','u_version','u_interface_privacy','install_status'];
    var arrayLength = fieldsArray.length;
    for (var i = 0; i < arrayLength; i++) {
        gs.log(previous.+fieldsArray[i]);
    }