Hi, the validator hasn't called when I upload the file. I try to use the <f:validator> or the validator method at backing bean. Both method cannot call the validator methed. Has anyone used the validator in upload file component?

<rich:fileUpload fileUploadListener="#{fileUploadBean.listener}"
maxFilesQuantity="3"
id="upload"
immediateUpload="true"
acceptedTypes="jpg" listHeight="150" listWidth="300">
<a4j:support event="onuploadcomplete" reRender="imagedetail" />
<f:validator validatorId="FileUploadValidator"/>
<f:param name="identifier" value="#{storeDetailBean.item.identifier}"></f:param>
</rich:fileUpload>