More than two parameters

Hi, people!!

In first place, excuse me for my english (i'm from Colombia).
I'm a PHP developer but is my first experience with Codeigniter (i love it!). I need pass three parameters in a rute like this:

https://mydomain.com/myapp/Controller/fu...am2/param3

With two parameters is all perfect but is not working with three. ¿Is not possible? ¿suggestions?

Thanks!!