How set wav filename in unity?

Hello! Can somebody tell me how set wav file name in unity?

My code:
string s = “filename.wav”;
FMODUnity.RuntimeManager.CoreSystem.init(128, FMOD.INITFLAGS.STREAM_FROM_UPDATE, System.Runtime.InteropServices.Marshal.StringToHGlobalAnsi(s));

Doesn’t work.
FMOD create file with default name - fmodoutput.wav

To pass information to the driver when initializing use the extradriverdata parameter in System::init for the following reasons: