Air2.0, Error while accessing Native process API

I am using native process API of Air2 in HTML/Js framework.

The problem comes when i try to make object of NativeProcessStartupInfo.

Here is mine code

if(air.NativeProcess.isSupported){

var nativeProcessStartupInfo = new air.NativeProcessStartupInfo();

Whenever i try to execute this code i 开发者_JAVA技巧got this error.

TypeError: Result of expression 'air.NativeProcessStartupInfo' [] is not a constructor.

Any suggestions on what i am doing wrong ?

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Check your application.xml file. Make sure the name space is "http://ns.adobe.com/air/application/2.0", not "1.0". That screwed me over for a while...