Help set a lock screen wallpaper

[afceurope]

Hi,
I want to set a picture for my lock screen but when i choose it and the dimensions of it it says it has set it but when you lock the phone it is just the home screen wallpaper!! Help please

 

[XploitZ]

settings->display->wallpapers->lockscreen
choose any picture from your gallery and you have to set the pic dimensions and save
worked for me

 

[afceurope]

I had a pattern to unlock the phone and when i took the pattern off it worked so that is fine