<h:outputText value="NUMBERS ONLY" />
   <p:inputText id="NUMBER"
      value="#{manageBean.nUMBER}" maxlength="12" >
      <f:validateRegex pattern="[0-9]*" />
   </p:inputText>
   <p:spacer width="15" height="1" />
   <p:message for="NUMBER" showSummary="true" showDetail="false" display="both" />