https://www.wowhead.com/forums/topic...s-macro-248202
I found this resource just now which is much closer to what I am trying to do
UPDATE: Using this method, I created my own list of PvP achievement IDs, which 'printed' to chat log at 12.29pm.. which i thought would be saved in ElvUI chatlog at 12.29pm.. nope, it only saved player chat stuff and the achi stuff was skipped ):