Setting up FMOD for Android – examples of Android.mk and project structures for NDK?

hi, i follow the guide from the docs and im getting NDK_PROJECT_PATH=Null in android studio
i want to debug my c++ code directly from the studio.

and i dont understand this line:
ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=Android.mk NDK_APPLICATION_MK=Application.mk
where to put it ?

please help