Midi Controls for mixer in rekordbox

I was wondering if there is a way to map the mixer buttons and faders via midi mapping in rekordbox. I have tried the learn button but when fader is moved back and forth, it does not register any signals from my xdj-xz. Any tutorials that can be sent my way or pages, i am willing to read about it but google does not have any articles or videos that show what I am looking for.