I want to set the value of doneLabel attribute of rich:fileUpload dynamically,ie one message will be shown for successful upload and another message will be shown for upload failure.I have tried something like this:

                    <rich:fileUpload style="width:412px;"

                                        noDuplicate="true"

                                        fileUploadListener="#{fileUploadController.listener}"

                                        maxFilesQuantity="#{fileUploadController.uploadsAvailable}"

                                        id="upload" immediateUpload="#{fileUploadController.autoUpload}"

                                        acceptedTypes="#{fileUploadController.supportedTypes}"

                                         listHeight="182px" doneLabel="#{fileUploadController.uploadDoneLabel}"

                                         immediate="true">

                                       <a4j:ajax event="uploadcomplete" render="uplodedFileTable"

                                          oncomplete="if(#{fileUploadController.error}){#{rich:component('errorPopup')}.show();}" />

                   </rich:fileUpload>

where doneLabel is a instance field of fileUploadController bean,the bean is is Session scope.and I have given getter and setter for this field.specified condition like this:

public void listener(FileUploadEvent event) throws Exception {

  uploadDoneLabel="";

if(item != null ){

........ //other codes goes here

.......

uploadDoneLabel="File Uploaded Successfully";

   }

else{

      uploadDoneLabel="Upload Failed";

}

}

but it is not showing the proper message during uploading,sometime it is showing the default value of doneLabel ie "done".

can anyone has any solution to this??????