How do I change privacy settings of SPECIFIC statuses on Facebook?

[Zidane]

I have a Limited list, but my statuses and posts by me are set to Only Friends, no exceptions. However, the little lock symbol by my last 2 statuses show that my Limited list cannot see them. How can I change that?

Please read this properly, too many people give wrong answers on here

[★angel★]

go to privacy settings & change it back to 'only friends'.
account-->privacy settings-->Profile Information-->post by me.

if you change status privacy using 'padlock' sign it's apply to certain post.
when you set privacy in privacy settings it's apply to all 'post by me' & status.