URI Routing

[eluser]Unknown[/eluser]
I'm trying to get URI routing working to create friendlier URLS

There are 3 sections to the site - mainsite, dashboard and dashboard admin

I have the dashboard section working like so

Code:

// example.com/dashboard/events/view routes to /events/view
$route['^dashboard/(.+)$'] = "$1";

I'm trying to get the dashboard admin to route in a similar way but having problems, here is my code

Code:

// example.com/dashboard/admin/user/add routes to /admin_user/add
$route['^dashboard/admin/(.+)$'] = "admin_$1";

Any help appreciated

Thanks
Dave