Import language values?

I'm using import manager plugin to import 4 language as in file in attachment.

It seems work but the language are imported in wrong way
My feed file is

LanguageId  Nome del prodotto
it-IT  Rivestimento pavimenti adesivo  - Black Marble 60x120
it-IT  Rivestimento pavimenti adesivo   - Blue Marble 60x120
it-IT  Rivestimento pavimenti adesivo   - Crossed Wood 60x120
it-IT  Rivestimento pavimenti adesivo   - Grunge 60x120

The old release uses only Language ID (integer value).
I did the new release and you can use Language ID, Language name, Language culture.
Try the new release.
Thank you for your idea.