MaterialFileUploader change name file not work

[boisnou]

when i set the name of file in method addAddedFilHandler, nothing change :

cardUploader.addAddedFileHandler( new AddedFileHandler<UploadFile>() {

			@Override
			public void onAddedFile( AddedFileEvent<UploadFile> event ) {
				event.getTarget().setName( "youpipipi" );
			}
		});

the webservice is call with old name.