Setting the language?

Hi!

I'm trying to create an action that will take the language as a $_GET input, set the language, then forward to the referrer page so that all the text now displays the correct language.

In my action I'm setting $CONFIG->language to the language initials (ie. "fr" or "ko").

This seems to have no effect though. What am I doing wrong? :(

 

Thanks in advance,

John