Thanks both 
So it looks like @OvermindDL1 idea of using a map would be the easiest way to get them across, but I’m intrigued by what you said @michalmuskala.
I’m not sure I fully grasp what you are suggesting, are you saying that the conversion would happen at the point that things are inserted and retrieved from the database? I’m struggling to figure out where those macros would live and how they would be used in other modules.
