Getting the path of an uploaded file in flex 4.6

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Flex

How can we get absolute path of file or "native Path" of file (as we call it in Flex/AIR) when we use File Reference to browse a file in adobe flash builder 4.6?

For example,if i uploaded a image from : "c:\upload\check.jpeg" I want the full path.. as "c:\upload\check.jpeg".

I need this in adobe flash builder 4.6,actually i Googled it but i got some outdated code i.e in flex 4.3 (How do I get the fullname of a file in Adobe AIR?) which is not working in 4.6

If any one knows,please help me i will be very thankful for them