How to load extended core system classes from controller?

[eluser]helloworld7[/eluser]
But how do I use the new function from MY_Input inside my controller?

I still don't get it. CI_Input gets load automatically but not MY_Input right?

You mean I do this? get_mid() is a new function inside MY_Input

$this->input->get_mid();

or

$this->my_input->get_mid();

I was thinking about trying it but I want to make sure the correct way or there're multiple ways.

Please let me know. Thanks.