Can't set a lock screen wallpaper on android 4.4

[mbroughton]

I'm running a cyanogenmod 11 snapshot of android 4.4.4 and I can't set a wallpaper just for my lock screen. How do you do it? Do I need to install a certain app? I get my wallpapers from the 'materialwalls' app and since you can't save those images I'd need to be able to get them from there.

Posted via Android Central App