How to add 180 degrees rotation?

[Guest felystar]

Hello I dont want to make off in topics so I will try here.

What I want is to enable 180 degrees rotation when I turn my phone those degrees? How can I add it? I have tried to change in build.prop from 180 to 360 as tillaz recommended me but it didnt work as it should. Suggestions? It is possible because in CM7 you can choose to use it or not but I dont want to flash CM. I have AtomICS