Dual Monitors and the new Target Display from 5.3

I would like to create a split screen game with two monitors. The new function “Target Display” is supposed to let me choose what display I want to use for which camera. With the documentation I have found online I could not get it to work and I was wondering if someone knew why. My setup contains two players with two camera’s set to display1 and display2. The code that I have in an empty Game Object is as following:

using UnityEngine;
using System.Collections;

public class AddMonitor : MonoBehaviour {

// Use this for initialization
private void Awake()
{
	if(Display.displays.Length > 1)
	{
		Display.displays[0].SetRenderingResolution(1680, 1050);
		Display.displays[1].Activate();
		Display.displays[1].SetRenderingResolution(1680, 1050);
	}
}

}

Unity Documentation of Target Display: Unity - Manual: Multi-display

I’ve tried some ‘hacks’ I found on the forum however it only works windowed. As the function is quite new, I have not found a lot about it. Also, I am working on OS X.

Thanks in advance,

Nikki

Even with the pro version (5.4.1) I get this on windows 10 when running the project in the editor. However doing a build and running the build returns the proper results. Here is my quick hack, where I hardcode in the number of my monitors which is 3 for the editor version.

        monitor_count = Display.displays.Length;

        #if UNITY_EDITOR
        monitor_count = 3;
        #endif
        #if !UNITY_EDITOR
        for (int i = 1; i < monitor_count; i++)
        {
            Display.displays*.Activate();*

}
#endif