How to get FMOD::System instance in Object-c code in Unity ios project?

How to get FMOD::System instance in Object-c code in Unity ios project?

Using FMOD_StudioSystem.instance.System.getRaw() will give you an IntPtr you can pass through pInvoke to objective-C and cast to a FMOD_SYSTEM* to call FMOD C api functions.

Hi, Nicholas Wilcox, Thanks for your answer!