What's wrong??

Hi!
I need an application to extract contactlist via YahooBBAuth. but when I call the url :

http://address.yahooapis.com/v1/searchContacts
   ?format=xml
   &appid=JnR5h4LIkYmvVcPmA2xPj_1XK.hGV.nxdhPS
   &WSSID=4083Sovmu5v

EntryPoint return a 403 status code:

Server returned HTTP response code: 403 for URL: http://address.yahooapis.com/v1/searchContacts?format=xml&appid=JnR5h4LIkYmvVcPmA2xPj_1XK.hGV.nxdhPS&WSSID=4083Sovmu5v

My code is equals to YahooBBAuthServer, with modifications for extract the contactlist:

			...
			... 
			/**
			 * Generate the portion of the URL that's used for signing.
			 * More information on BBAuth can be found here: <a href="http://developer.yahoo.com/auth/" target="_blank">http://developer.yahoo.com/auth/</a> 
			 */
			String authWS = "/WSLogin/V1/wspwtoken_login";
			String sig = authWS + "?appid=" + URLEncoder.encode(appId, "UTF-8") + "&token=" + URLEncoder.encode(token, "UTF-8") + "&ts=" + time + secret;
			String signature = new BigInteger(1, digest.digest((sig).getBytes())).toString(16);
			String authURL = "https://api.login.yahoo.com" + authWS + "?appid=" + appId + "&token=" + token + "&ts=" + time + "&sig=" + signature;
			//out.println(authURL);
			//out.println("
");
			
			InputStream rstream = (new URL(authURL)).openStream();
				   
			/**
			 * Retrieve the XML response to the auth request and get the wssid and
			 * cookie values.
			 */
			Document xmlresponse = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(rstream);
	
			String wssid = null;
			String cookie = null;
			String timeout = null;
			
			// Check if token is in the response
			NodeList wssidResponse = xmlresponse.getElementsByTagName("WSSID");
			NodeList cookieResponse = xmlresponse.getElementsByTagName("Cookie");
			NodeList timeoutResponse = xmlresponse.getElementsByTagName("Timeout");
			Node wssidNode = wssidResponse.item(0);
			Node cookieNode = cookieResponse.item(0);
			Node timeoutNode = timeoutResponse.item(0);
			if (wssidNode != null) {
				out.println("BBauth authentication Successful");
				out.println("
");
				wssid = wssidNode.getTextContent();
				cookie = cookieNode.getTextContent();
				timeout = timeoutNode.getTextContent();
				out.println("wssid = " + wssid);
				out.println("
");
				out.println("cookie = " + cookie);
				out.println("
");
				out.println("timeout = " + timeout);
				
				URL contactsUrl = new URL("http://address.yahooapis.com/v1/searchContacts?format=xml&appid="+appId+"&WSSID="+wssid+"&wssid="+wssid);
				
				InputStream is = contactsUrl.openStream();
				byte[] buf = new byte[is.available()];
				is.read(buf);
				is.close();
				String parse = new String(buf);
				
				out.println(contactsUrl.toString()+"\n");
				out.println(parse);
			} else {
				...
				...

what's wrong?

thank you in advance !