Problem for mapping two applications

[eluser]lama[/eluser]
Hello

I read the "Managing your Applications" tutorial but I have a problem to set two app in my CI.

I have application folder with two sub folder : frontend and backend.

The basic index.php file contains

Code:

$application_folder = 'application/frontend';

After I created an admin folder with a second index.php with this path

Code:

$application_folder = 'application/backend';

But when I go to localhost/myapp/ it's running with my default controler, but when I go to localhost/myapp/admin it's doesn't run. I have a 404 error...

Someone can help me ?

Thank you