Why can't I update a p:graphicImage twice after upload a file with p:uploadFile

I have been trying to upload an image with a p:uploadFile and it work fine at first time, but after the first uploaded file it not update the p:graphicImage, but if I reload the page the value of the graphicImage is fine and the image is showed. So, I think that is a problem with the primefaces uploadFile component, but I not sure. My xhtml is this: ``` <h:form id="formNuevo" size="150%" enctype="multipart/form-data"> <h:outputLabel value="Diseño Neumatico: *" /> <p:fileUpload fileUploadListener="#{serviciosVentanaDiseno.manejarUploadedFile}" mode="advanced" auto="true" sizeLimit="9000000000" allowTypes="/(\.|\/)(gif|jpe?g|png)$/" update="mensajes graficImage"/> <p:graphicImage id="graficImage" styleClass="disenoNeumatico" value="#{serviciosVentanaDiseno.streamedContentImagen}" ajax="true"/> </h:form> ``` and my bean is a @SessionScoped bean, it's here: ``` public void manejarUploadedFile(FileUploadEvent event) { UploadedFile uploadedFile = (UploadedFile)event.getFile(); try { diseno.setImagen(uploadedFile.getContents()); streamedContentImagen = new DefaultStreamedContent(new ByteArrayInputStream(diseno.getImagen())); } catch (IOException e) { //log error } } public StreamedContent getStreamedContentImagen() { return streamedContentImagen; } public void setStreamedContentImagen(StreamedContent streamedContentImagen) { this.streamedContentImagen = streamedContentImagen; } ```