XMPP

Question

I build the xmpp demo for windows phone 8.1 and login successfuly send message succuessfully but in case of retreiving the message i failed anybody pls help me. i think this code will help.. obj_xmpp.xmpp_client.OnXMLReceived += new System.Net.XMPP.XMPPClient.DelegateString(XMPPClient_OnXMLReceived);