HOW TO CHANGE THE LANGUAGE OF DOLIBARR?

Hey guys,
When I installed dolibarr i had my browser automatic in english and all setup was done in english, so I got a dolibarr in english but stablished in spain as country.
I just realized the language issue when I started seeing the proposals in english.
So, I went to setup and display and it says:
" Default language to use (language code) / Autodetect (browser language) / Enable multilingual interface - No "
I have tried to change my browser language to spanish and still dolibarr comes in english.
Is there another way to change to spanish from spain?

Go to your user account->User Display Setup–>Modify->Tick Use Personal Value and select Spanish from the list->Save
Should change GUI to spanish.