How to Send PUT HTTP Request n flex 4

Hi, I am creating one desktop application in which I want to update one XML on the web via sending the data in the form of XML via sending a PUT request.

I am sending PUT request but when I have seen request in Network Monitor of Flex 4 I have found that it is sending POST request…

When I am sending PUT request it is giving IOError in the response.

I am using batchbook API and I want to update person…

Please help…