Inport/Exporting models for Age of Mythology

How can you Inport/Exporting a brg model in blender 2.79 to use in the Age of Mythology game?
I know it can be inported (brg or even 3ds) in to work on , but you can’t export it out as a brg mode
that you need for the game. Can anyone help and fix a way to export the brg for the game.