How force the app to landscape in Android with a Manifest.xml?

Hi, I upgraded to unity 4.2.1, and the landscape mode started to fail, I need to force the app to landscape mode in Android with a manifest.xml config, or something else, please someone knows the way? can you help me please?

Adding this to your manifest should force your app to landscape:

    <!-- Force Landscape-->
    <activity 
      android:name=".ActivtyName"
       android:screenOrientation="landscape">
    </activity>