you are

Posted by keren on Thursday, 19. March 2009 at 19:15 Bali Time:

In Reply to: I think posted by ozzyy on Thursday, 19. March 2009 at 17:19 Bali Time:

correct! congratulations

but if you want to just use the word "bahasa" - you may. It is universally understood to mean Bahasa Indonesia.
Selamat belajar!