417 - Expectation Failed

hi, i am trying to do a POST request to the server using WWW class. i havent got any success because my server is lighttpd and it chocked a "417 - Expectation Failed" message. I googled it and i found that i need to disable expect:100continue on the headers of the POST request.

on MSDN site there is a line that turn it by using

System.Net.ServicePointManager.Expect100Continue = false;

and i couldnt find anything using unitys WWW class. i found documentation on unity for putting extra headers on POST. but it didnt work. and the sample for csharp was actually wrong syntax.

so I improvisised and putting like form.header["Expect"]=""; but it still sending the expect 100continue. even i tried the sample on the unitys site, and the headers didnt change at all. maybe it s a bug.

btw i m using 2.6 unity. planning to deploy it on Web Player.

so i solved it by using this..

WebClient client = new WebClient();
NameValueCollection postData = new NameValueCollection();
System.Net.ServicePointManager.Expect100Continue = false;  ///the line that msdn recommends
postData.Add("levelName", "defaultLevel");
postData.Add("jsonData", jsonMess);
byte[] response = client.UploadValues(CConfig.urlExport, postData);
_log.write(new System.Text.ASCIIEncoding().GetString(response));

and it worked.
BUT i havent tried it on web player deploy. i only tried it on the editor. because i only need it once after editing a level.

The Question is : how do i do it with WWW class to solve Expect100Continue problem?