Can't change lockscreen effect

[Ahmadhesham]

I want to change my lockscreen effect,so i changed the lock type to swipe so the lock screen effect appears but it appeared to be locked (shaded in grey).. so what should i do to unlock it?

 

[iseededppl]

I want to change my lockscreen effect,so i changed the lock type to swipe so the lock screen effect appears but it appeared to be locked (shaded in grey).. so what should i do to unlock it?

Are you using a live wallpaper? Only static wallpapers support LS effects.