Hi,
I am new to Spring Web Flow and currently facing an issue which I dont know how to resolve.

Problem Domain: I have a command object that contains a list. I am displaying the data from within that list and also using a checkbox. Now I want to get the values of all the checkboxes that I select( after the page has been rendered) to be available to me in my controller.

My Command Object is:
Code:
public class Borrower {
  private Set<Reservation> reservations = new HashSet<Reservation>(0);
  ...........
  ...........
This is a domain Object that is being autogenerated by Hibernate Tools.

My JSP looks like this:
Code:
<form:form commandName="borrower" method="post" >
		<c:set var="ddlist" value="${borrower.reservations}"  />
   
<table width="95%" bgcolor="f8f8ff" border="1" cellspacing="0" cellpadding="5">
<c:forEach  var="ddlistItem" items="${ddlist}" varStatus="rowCounter">
<tr>
      <td align="right" width="20%">
        	
        	<form:checkbox path="reservations[${rowCounter.index}].selected"/>
        </td>
        <td>
       
       <b>reservationDateTime:</b>${ddlistItem.reservationDateTime}</br>

		
        
        	
        </td>
        
    </tr>
</c:forEach>
</table>
<br>
<c:if test=""></c:if>
<input name="_eventId_cancel" type="submit" value="Cancelation" />
  <input type="hidden" name="_flowExecutionKey" value="${flowExecutionKey}" />

</form:form>
Also the Reservation Java class Looks like this :

Code:
public class Reservation {
 private boolean selected;
........
........
<other properties and their corresponding getters and setters>
But this doesnt seem to be working. I am getting the following exceptions:

Code:
ognl.NoSuchPropertyException: org.hibernate.collection.PersistentSet.0
	ognl.SetPropertyAccessor.getProperty(SetPropertyAccessor.java:67)
	ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1657)
	ognl.ASTProperty.getValueBody(ASTProperty.java:92)
	ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	ognl.SimpleNode.getValue(SimpleNode.java:210)
	ognl.ASTChain.getValueBody(ASTChain.java:109)
	ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
	ognl.SimpleNode.getValue(SimpleNode.java:210)
	ognl.Ognl.getValue(Ognl.java:333)


Also :

org.springframework.binding.expression.PropertyNotFoundException: Property 'reservations[0].selected' not found on context of class [org.oclc.lbs.domain.circulation.Borrower]
	org.springframework.binding.expression.ognl.OgnlExpression.getValue(OgnlExpression.java:87)
	org.springframework.webflow.mvc.view.BindingModel.getFormattedValue(BindingModel.java:146)
	org.springframework.webflow.mvc.view.BindingModel.getFieldValue(BindingModel.java:128)
	org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:120)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:172)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:192)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:158)
	org.springframework.web.servlet.tags.form.AbstractCheckedElementTag.autogenerateId(AbstractCheckedElementTag.java:80)
	org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:136)
	org.springframework.web.servlet.tags.form.AbstractSingleCheckedElementTag.writeTagContent(AbstractSingleCheckedElementTag.java:81)
	org.springframework.web.servlet.tags.form.CheckboxTag.writeTagContent(CheckboxTag.java:51)
	org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:90)
	org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:77)
	org.apache.jsp.jsp.showReservation_jsp._jspx_meth_form_005fcheckbox_005f0(showReservation_jsp.java:261)
	org.apache.jsp.jsp.showReservation_jsp._jspx_meth_c_005fforEach_005f0(showReservation_jsp.java:211)
	org.apache.jsp.jsp.showReservation_jsp._jspx_meth_form_005fform_005f0(showReservation_jsp.java:135)
	org.apache.jsp.jsp.showReservation_jsp._jspService(showReservation_jsp.java:93)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
My controller is extending MultiAction class of the Spring WebFlow
Can somebody tell me how binding works in web flow.
Also is it necessary to write our own binders if we need to pass a List of objects from the JSP to our controller?

Anuj.