Error when transfer file

HI! I´m have an error… I´m connecting with the server normally, and the other client is online…

java.lang.IllegalArgumentException: The provided user id was not fully qualified

StackTrace:

java.lang.IllegalArgumentException: The provided user id was not fully qualified

at org.jivesoftware.smackx.filetransfer.FileTransferManager.createOutgoingFileTran sfer(FileTransferManager.java:137)

at GUIs.PruebaFileTransfer.(PruebaFileTransfer.java:31)

at GUIs.PruebaFileTransfer$1.run(PruebaFileTransfer.java:43)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)

at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java: 242)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:16 3)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Someone can help me???

Thanks

You need to provide a fully qualified JID to transfer a file with someone: user@server.com/resource

AH! OK now it´s working… THANKS…