How to set battle music for a map?

[xZekro51:.]

I have problems with the terrain tags, i don't know how i can Set the battleBGs on the maps, the methods on Pokemon Essentials Wiki Don't Work D:

 

[thor348]

I have problems with the terrain tags, i don't know how i can Set the battleBGs on the maps, the methods on Pokemon Essentials Wiki Don't Work D:

what problems with the terrain tags?
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The battleBGs as in the backdrops for the battles or the music?

Use the Editor.exe for the following steps:
1) Set Metadata
2) Choose the map you want
3) You can change the battle backs, bgm's and me's from here