NativeProcess.isSupported always return false

Hi,

when i do this trace(NativeProcess.isSupported) it always retun false. I run the code on flash cs5 AIR 2.0. Then i publish as .air file and it again it gave the 'false' as result. I checked the xml file it have tag "<supportedProfiles>desktop extendedDesktop </supportedProfiles>". Then i tryed the same from flash cs6 AIR 3.2 again the same 'false' result.

What is the problem? What should i do to get the result as 'true'?

Here is the xml file generated from flash CS5:

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>

<application xmlns="http://ns.adobe.com/air/application/2.0">

  <id>test</id>

  <version>1.0</version>

  <filename>test</filename>

  <description/>

  <name>test</name>

    <copyright/>

   <initialWindow>

    <content>test.swf</content>

    <systemChrome>standard</systemChrome>

    <transparent>false</transparent>

    <visible>true</visible>

    <fullScreen>false</fullScreen>

    <aspectRatio>portrait</aspectRatio>

    <renderMode>auto</renderMode>

  </initialWindow>

  <icon/>

  <customUpdateUI>false</customUpdateUI>

  <allowBrowserInvocation>false</allowBrowserInvocation>

  <supportedProfiles>desktop extendedDesktop </supportedProfiles>

</application>

Thanks

Siva