Having some diffs getting validation working on a select item list.

Code:

<s:validateAll>
          <tr>
            <td class="cntForm"><h:outputText value="#{msgs.newCustomerRegion} "/></td>
            <td class="cntForm">
              <h:selectOneListbox id="region" required="true" size="3" value="#{customer.region}" converter="GeographicalRegionConverter">
                <f:selectItems value="#{selectItems.regions}" />
              </h:selectOneListbox> *
            </td>
            <td><h:message for="region" styleClass="cntError" /></td>
          </tr>
</s:validateAll>



backing bean:

Code:

    @OneToOne
    @NotNull(message="Please select a region")
    public GeographicalRegion getRegion() {return region;}
    public void setRegion(GeographicalRegion region) {this.region = region;}



but when I click through without setting a value... it just doesn't fire the validation.