Realtime Queues

Hi all, I have Asterisk 11.3 setup using realtime queues, I found a list of column names for the realtime queues table but it doesn’t appear to have the reltaive-periodic-announce column, I have tried setting it in queues.conf and doing a module reload app_queue.so but the change doesn’t take. Am I able to just add this column to the table or is there more work in the underlying code which would need to be changed.

This is on a production system so I don’t want to add a new database column in case it breaks it.