use wwise soundbank in android

Question

My project need hotupdate and so update soundbank when loading, to file path Application.persistentDataPath

but even though i AddBasePath to SoundEngine, It's failed to load bank Init.bnk

when write script to check ,these file are all exist in the right place.

Code: (set path)

rootPath =  UnityEngine.Application.persistentDataPath;         fullBasePath = "assets";         fullBasePath = System.IO.Path.Combine(rootPath, fullBasePath);         AkSoundEngine.AddBasePath(fullBasePath );

Result:

1. SoundEngine init success 2. load Init.bnk fail error AK_FILE_NOT_EXIST 2. var files = System.IO.Directory.GetFiles(fullBasePath ); // test Init.bnk exist in variable files

how can i get the load path when akbankmanager  use loadbank("Init.bnk")?