Language problem

[eluser]Alix.G[/eluser]
Hey, I have some trouble changing the language item of the config file, it seems that it's changing but it's not retrieving the right language.

Here what I have done to test it:

In one of my controller I created a function

Code:

function french()
    {
        echo $this->config->item('language').'<br />'.$this->lang->line('admin_products').'<br /><br />';
        $this->config->set_item('language', 'french');
        echo $this->config->item('language').'<br />'.$this->lang->line('admin_products').'<br /><br />';
    }

// output :
//
//english
//products
//
//french
//products

Thanks for your help