Calculate Frequency Spectrum does not work on Package version (but fine in Editor)

I use this very simple blueprint to use sound data and it’s fine in the editor, but in the package, it doesn’t work at all. Anyone got an idea?

Thanks !

Ok, finally I use this : Getting the Amplitude of a Playing Sound – Teedstuff – A place for my tinkerings…

It’s different but much more efficient and easier to install.