code: private RequestBuilder buildMultipart( String name, String value )
  	{
  		String boundary = "AJAX------" + Math.random() + "" + new Date().getTime();
  
  		RequestBuilder builderPost = new RequestBuilder( RequestBuilder.POST, url );
  		builderPost.setHeader( "Content-Type", "multipart/form-data; charset=utf-8; boundary=" + boundary );
  		builderPost.setCallback( requestCallback );
  
  		String CRLF = "\r\n";
  		String data = "--" + boundary + CRLF;
  		data += "--" + boundary + CRLF;
  
  		data += "Content-Disposition: form-data; ";
  		data += "name=\"" + name + "\"" + CRLF + CRLF;
  		data += value + CRLF;
  		data += "--" + boundary + "--" + CRLF;
  
  		builderPost.setRequestData( data );
  
  		return builderPost;
  	}
docs: prepare a multipart form http request