Help with a simple route

[eluser]Uplift[/eluser]
It's actually a separate page i'm using a cms.

Code:

$route['offers/:any']                      = 'pages/view/show-category'; // .com/offers/category
$route['offers/[changable category]/:any'] = 'pages/view/show-offer'; // .com/offers/changeable-category/item-one

That is how i would guess it, but i'm not sure of the exact way to do it.