Lose alredy created session bean

Hi all!
I have a problem with useBean and session. I use a OrderCartBean and this object contain an
ArrayList of OrdeBeans. I can add an OrderBean to OrderCartBean ArrayList. But next time I try to add an OrderBean to same OrderCartBean's ArrayList it does not work.
The problem is that I don't use the same OrderCartBean from session. The jsp-page seems to create a new
OrderCartBean instead of using the one in session and put the next OrderBean to the new OrderCartBean ArrayList
I looked around in many pages on the internet but i can't see what i'm doing wrong?
Thanx in advance...
Here is my code:
ode]
[orderCart.jsp]
<jsp:useBean id="orderCart" scope="session" class="bean.OrderCart"/>
<html>
<body>
<form method="post" name="order" action="orderCart.jsp">
<table border=0 cellspacing=2 cellpadding=5 width=400>
<input name="action" type="hidden" value="addItemToOrder" />
<tr>
<td><label>Art.no</label>
<input type="text" name="artNo"></td>
<td><label>Name</label>
<input type="text" name="artName"></td>
<td><label>Quantity</label>
<input type="text" name="quantity" size="4"></td>
</tr>
<tr>
<td colspan=2 align=left><input type="submit" value="Add to order" name="AddValue"></td>
</tr>
<%
     String action = request.getParameter("action");
     if (action != null && action.equals("addItemToOrder")) {
     //Set values to OrderBean
%>
<jsp:useBean id="order" class="com.easy.bean.Order" scope="request" />
<jsp:setProperty name="order" property="*" />
<%
     //I got different orderCart every time. Not the same from session?
     System.out.println(orderCart);
     //Add order to OrderCart ArrayList
     orderCart.addOrderToArray(order);
     //Get orders from OrderCart array
     Iterator iter = orderCart.getOrderArr().iterator();
     while(iter.hasNext()){
     com.easy.bean.Order tmpOrder = (com.easy.bean.Order)iter.next();
%>
<tr>
<td><B>Art.no.</B></td>
<td><B>Name</B></td>
<td><B>Antal</B></td>
</tr>
<tr>
<td><%=tmpOrder.getArtNo()%></td>
<td><%=tmpOrder.getArtName()%></td>
<td><%=tmpOrder.getQuantity()%></td>
</tr>
<%}%>
</table>
</form>
</body>
</html>
[OrderCart.java]
package com.easy.bean;
import java.util.ArrayList;
public class OrderCart {
ArrayList<Order> orderArr = new ArrayList<Order>();
public OrderCart() {}
public ArrayList<Order> getOrderArr() {return this.orderArr;}
public void setOrderArr(ArrayList<Order> orderArr) {this.orderArr = orderArr;}
public void addOrderToArray(Order order) {this.orderArr.add(order);     }
public void removeOrderFromArray(Order order) {     this.orderArr.remove(order);}
[Order.java]
package com.easy.bean;
public class Order {
int artNo;
int quantity;
String artName;
public Order() {}
public String getArtName() {return this.artName;}
public void setArtName(String artName) {this.artName = artName;}
public int getArtNo() {     return this.artNo;}
public void setArtNo(int artNo) {this.artNo = artNo;}
public int getQuantity() {return this.quantity;}
public void setQuantity(int quantity) {this.quantity = quantity;}

So a stateless bean could hold the value of the key throughout its lifetime and each separate method call would have access to it?

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