CDJ2000NXS2 Track Filter

hi hope someone can help me with something that should be an easy ask.

How do I get the track filter to work?

I play off USB and usually playlists however sometimes if I want to search my entire collection by BPM and Key I don't seem to get a return back.

Its me and not the hardware so just need a nudge in the right direction. I do select the track list before hitting the shortcut button but no cigar?

any help appreciated

Regards

Paul