Query regarding usage of attribute maxFilesQuantity

[Sachindra Pratap]

Hi All,
There is query regarding the usage of attribute maxFilesQuantity.
Acutally while file upload ,i want to restrict to only one file upload.
The following code is used to upload the single file, but code is not working,here i mean to say, after one file get uploaded, again the add file option is availabe to add another file , i want to restrict to only single file upload. Please provide the solution to above problem.

   <rich:fileUpload fileUploadListener="#{batchAction.listener}" id="batch_file" acceptedTypes="txt,csv"
                        ontyperejected="alert('Only text and csv files are accepted');"  maxFilesQuantity="1" immediateUpload="true"  fileName="#{batch.fileName}" required="true" />

regards,
Sachindra Pratap