How to separate umap into different downloadable file for android

So i want to make it so some levels in game can be downloaded separately and i was trying to assign level to different chunks but i still got just normal .aab with everything cooked inside it i tried making PrimaryAssetLabel but still the same i tried putting

[/Script/AndroidRuntimeSettings.AndroidRuntimeSettings]
+ObbFilters="-pakchunk5"

in DefaultEngine.ini but still same single file with everything cooked in it