I am trying to use the a4j:support tag to do validation onblur however i get this error. of course the onblur property does exist, i can add a script to it directly.

any ideas what is going wrong?

<a4j:outputPanel id="myOutputPanel">
 <s:decorate>
 <h:inputText value="#{value}">
 <a4j:support event="onblur" reRender="myOutputPanel"/>
 </h:inputText>
 </s:decorate>
</a4j:outputPanel>