Glad to hear. It sounded like you were having two separate issues. On the second issue (creating a procedure) I think your changeset is malformed. Not sure if Liquibase gave you an error message on that or not. I think there are two issues. The first issue is that you didn't specify a name, and the second issue is that you have both the path to a sql file as well as inline SQL - you should pick one or the other.
Steve Donie