Remove app from Recent Screen do Android

I've tried to do as described in the documentation, but I could not remove code via the screen of the application of recent Android.

About Recent: http://developer.android.com/guide/components/recents.html

I've tried changing the AndroidManifest.template.xml file by entering: android: excludeFromRecents = "true"

 And the application is still recent screen, another option I tried was to add android: autoRemoveFromRecents = "true" in AndroidManifest.template.xml, however this if Delphi does not even compile.

Any idea how to get?