Blueprint Nativization (C++ converter)

I keep getting this error when packaging from front end

BuildCookRun.DoBuildCookRun: WARNING: Project is configured for Blueprint nativization, but the conversion flag (-nativizeAssets) was omitted from the command line. No nativized assets have been built as a result.

Not sure how to actually activate this from front end…

EDIT: Nevermind got it to had to add -nativizeAssets to the extra command line params slot.