ActionForm in session scope

I have ActionForm which has a variable of type ArrayList, and I am using the nested tags to iterate through the arraylist in the jsp. For each row there is a delete button which removes the object from the arraylist when clicked.

Prior to putting the scope="session" in the <action path=...> of the struts config file, i was not able to retrieve the value of the arraylist upon form submission. Now when the scope is session and when I delete/add the rows in some order, during this process sometime it throws the IndexOutOfBoundsException for the arraylist.

Actually when i see the length of the Arraylist in the jsp page before iterating it shows me the correct length, but i dont know why the <nested:iterete> tag is looking beyond the length.

I think it is something to do with the session, anybody has some clue

javax.servlet.ServletException: BeanUtils.populate
org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1254)
org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

root cause 
 
java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
java.util.ArrayList.RangeCheck(ArrayList.java:508)
java.util.ArrayList.get(ArrayList.java:320)
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:521)
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:428)
org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:770)
org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:801)
org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:881)
org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:808)
org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1252)
org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:821)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

the jsp code

<logic :-P	 resent name="newReservationForm" property="quoteClientList">
 
<nested:iterate property="quoteClientList" indexId="ctr">
<%
System.out.println("ctr size in jsp ========== "+ctr);

%>
 <tr>
 <td width="50" align="center" style="padding:0;" height="25">
<input type="image" src="images/delete.gif" border="0" alt="Delete Row" >
 </td>
 <td width="125" height="25" align="center" style="padding:0;">

 <nested:write property="clientName"/>
 

 </td>
 <td width="125" height="25" align="center" style="padding:0; ">

 <nested :mrgreen: efine id="contList" property="contactList"/>
<nested:select property="contactId" size="1" style="width :85" >
<html :-o	 ptions collection="contList" labelProperty="value" property="label"/>
 </nested:select>
 

 </td>
 <td width="120" align="center" height="25" style="padding:0; ">

 <nested:text property="dueDate" size="10"/>
 

 </td>
 <td width="150" align="center" height="25" style="padding:0; ">

 <nested:text property="followUpDate" size="10" /> 
 

 </td>
 <td width="230" align="center" height="25" style="padding:0; ">

 <nested:text property="comments" size="25"/>
 

 </td>
 </tr>
</nested:iterate>
</logic :-P	 resent>

shankar