Cant' change Facebook's Like button language

Hello everyone!

I'm having a problem with the Facebook's like button language.
I know this topic is already in the board, but i didn't find the solution to my problem there...

So, to be more specific, i have my site (sat.org.ar) that have a "Noticias" (News) section with a lot of articles.
Every article have the social buttons at the bottom of the page.
Both twitter and G+ buttons are in Spanish, but i cant change the like button to spanish, i dont know why.
I already tried in the template parameters and changing the item.php file, with no success...

Can somebody help me please?

Thanks

PS: sorry for my bad english

In template settings -> social API settings find field:
Facebook API language
and change it from en_US to your country code.

Cyberek: that's the first thing i tried, and obviously didn't work...

Thanks anyway.

I still need help, no solution yet :/

Please send me a PM with:
1. URL to your website
2. login and password of user with admin/super-admin privileges (please create one for me)
3. ftp data (host, user, password)
4. link to this thread

Ill check why changing language in backend doesnt change frontend.