4k Smart Playlists?

Can anyone tell me how to set up a 4K smart playlist?

I’ve recently been bought a 4k TV as an early Christmas present due to the failure of the backlight on my elderly Samsung 1080p LCD and I have quite a bit of 4K content already since I was planning on purchasing a 4k TV in the new year… I cannot seem to get the playlists to recognize 4K content though. I’ve tried using “Resolution IS 2160” and “Resolution IS NOT 480, 576, 720, 1080” yet I get no results with the first and for some bizarre reason SD content with the second. I’ve also tried using 3840 as a resolution just in case Kodi has decided to depart from reality and suddenly decided to read the horizontal resolution instead of the vertical… but nothing at all seems to be working.

It’s driving me utterly insane at this point.