Absolute beginner question: Writer autocorrects for English although document language is set to Swedish

First time Libreoffice/Ubuntu user. I work as a translator and a writer so LibreOffice writer is one of the most important applications on the machine for me. How do I make autocorrect adapt to the document language?

Libreoffice-writer 1:4.2.6.3-0ubuntu1
Ubuntu 14.04 LTS

Extras → Options → Language Preferences → Language → “Standard language for documents” → Western → Choose a language from the drop-down-menu

(Menu Options might be slightly different as I’m having German GUI package installed)

Hi!
Perhaps I was being unclear: I did set the standard language to Swedish. The question is precisely why it still autocorrects for English although language is set to Swedish.
Thanks!