i have a rich:datatable in which one col has checkboxes and if it is ticked a input Number spinner is rendered .my problem is aftera value is inputed in the spinner its corresponding setter is not being called and hence value of it i not being set in the bean. below is the code snippet. i have two such cols in my datatable . it has somthg to do with ajax thgy i believe
wat cud be the prob
help much appreciated

 <rich:dataTable id="allCfvbs" value="#{myBean.mylist}" var="myItem"
<f:facet name="header">
....
</f:facet>
..............
<rich:columnGroup>
<rich:column>
<h:outputText value="description"/>
</rich:column>

 <rich:column align="center">
 <a4j:outputPanel id="colGrp">
 <h:selectBooleanCheckbox value="#{myItem.state}">
 <a4j:support event="onclick" reRender="colGrp" switchType="client">
 </a4j:support>
 </h:selectBooleanCheckbox>
 <rich:inputNumberSpinner value="#{myItem.count}" enableManualInput="false" minValue="1" rendered="#{myItem.state}"/>
 </a4j:outputPanel>
 </rich:column>