Change title language in tabs

Hi

I'm using the plugin instead of the module and i was able to style as i needed for now.
The only thing i cannot change is the title of the tab. I've read the posts about that kind of subject and created a copy of en-EN.mod.articlesuggestions.ini to my default languague that is Portuguese, and changed this information:

TITLE_RELATED_ARTICLES="Artigos Relacionados"
TITLE_AUTHOR_ARTICLES="Mais dests Autor"
TITLE_MOST_READ_ARTICLES="Artigos maid Lidos"
TITLE_LATEST_ARTICLES="Últimos Artigos"
TITLE_CATEGORY_ARTICLES="Artigos dests Categoria"

I've uploaded the file but nothing happens. The site will have an English Version soon, so there is a need that the title will be English and in Portuguese as language is selected. I'm using Falang in joomla 2.5.

You can have a preview of the template here: http://www.ahnfelt.com/site2012/index.php/pt/intranet

Can you help me correct this situation?