[VX] Request: Script that uses MapBGM in battle

[shc0023]

Hello. I need a script that makes mapBGM is used in battle, not battleBGM.

When I set the battleBGM as the same as mapBGM, it starts the music again when the battle begins.

What I want is when the battle starts the map music continues on.

Could anyone please write that script for me or let me know a made one?