UNITY IPHONE script error (414048)

Unity Engine
,
1 
@script ExecuteInEditMode

class EdgeDetectEffectNormals extends ImageEffectBase
{	
	function Start() {
		camera.depthTextureMode = DepthTextureMode.DepthNormals;
	}
		
	function OnRenderImage (source : RenderTexture, destination : RenderTexture)
	{
		ImageEffects.BlitWithMaterial (material, source, destination);
	}
}

Assets/Edge Detection/EdgeDetectEffectNormals.js(6,24): BCE0019: ‘depthTextureMode’ is not a member of ‘UnityEngine.Camera’.

Assets/Edge Detection/EdgeDetectEffectNormals.js(6,43): BCE0005: Unknown identifier: ‘DepthTextureMode’.

How to modify the

2

The depthTextureMode property is part of the main Unity API, but it isn’t available in Unity iPhone.