[db-wg] inverse search help?

I forgot how to do an inverse search to find my ASN in as-sets. So Google AI tells me: Yet: hank@nocvm:~$ whois -h whois.ripe.net -i members as378 % This is the RIPE Database query service. % The objects are in RPSL format. % % The RIPE Database is subject to Terms and Conditions. % See https://docs.db.ripe.net/terms-conditions.html % Note: this output has been filtered. %       To receive output for a database update, use the "-B" flag. %ERROR:105: attribute is not searchable % % "members" is not an inverse searchable attribute. %ERROR:101: no entries found % % No entries found in source RIPE. % This query was served by the RIPE Database Query Service version 1.120 (DEXTER) What am I doing wrong? Thanks, Hank