title: Set p:selectBooleanCheckbox value to bean with ajax
body: <p>Hi i have a primefaces datatable with dynamic columns</p>
  
  <pre><code>&lt;h:form&gt;
      &lt;p:dataTable id="cars" var="car" value="#{formBean.carsSmall}" 
          filteredValue="#{formBean.filteredCars}"&gt;
          &lt;p:columns value="#{formBean.columns}" var="column" 
              columnIndexVar="colIndex"sortBy="#{column.property}" 
                  filterBy="#{column.property}"&gt;
              &lt;f:facet name="header"&gt;
                  #{column.header}
              &lt;/f:facet&gt;
              &lt;p:outputPanel 
                  rendered="#{(column.header eq 'CHECKVALUE1') or (column.header eq 'CHECKVALUE2')}" &gt;
                  &lt;p:selectBooleanCheckbox value="#{car.checkValue}"  id="checkboxId"&gt;
                  &lt;/p:selectBooleanCheckbox&gt;
              &lt;/p:outputPanel&gt;
              &lt;p:outputPanel 
                  rendered="#{(column.header ne 'CHECKVALUE1') and (column.header ne 'CHECKVALUE2')}" &gt;
                  #{car[column.property]}
              &lt;/p:outputPanel&gt;
          &lt;/p:columns&gt;
      &lt;/p:dataTable&gt;
  &lt;/h:form&gt;
  </code></pre>
  
  <p>and i want to submit checkbox values to bean with ajax how could i do that ??
  I tried to write something like:</p>
  
  <pre><code>&lt;p:selectBooleanCheckbox value="#{car.checkValue}"  id="checkboxId"&gt;
      &lt;p:ajax update="@form"/&gt;
  &lt;/p:selectBooleanCheckbox&gt;
  </code></pre>
  
  <p>But the value doesnt set to bean..</p>