Issue in android mobile application for Zimbra email

Attachment and forwarding email having issue in android application. Zimbra mail server is not returning upload id of attached file. We have attached file [login to view URL] file which instruct us required request header, file data to upload file. We also attached the java code file of that. We were able to get response OK 200 from the server but could not get the upload id. We get null in that place. We have attached a image file toasting the response. We have also received a config file from server which has nothing in it. This might be causing this issue. We have attached it as upload.conf. Please find attached file which clearly shows this issue. Forwarding mail: As the zimbra document instructs to set OriginId with id of forwarding mail and to set w in msgToSend object. We are setting is as below. [login to view URL](emailAddrInfos); [login to view URL]([login to view URL]().getId()); [login to view URL]("w"); Sent mail with forwarding mail is seen in sent item. But it is not received by recipient. You will be provided with android development support. We will also provide support if you need any configuration changes in zimbra server but you should provide configuration support. We will deploy in zimbra server.