Does UnityPause in iOS still work?

Questions & Answers
1

I’ve created an app that makes use of the Unity engine in some views. I would like to be able to pause Unity when it is hidden. The function

void UnityPause(bool pause);

seems to be exactly what I’m looking for, but when I call it Unity continues to run. Is this function still supported?

2

I could not find this in the documentation so I assume it’s no longer supported.
Here is a documentation of the functions: http://docs.unity3d.com/Documentation/ScriptReference/MonoBehaviour.html