Can we update InfoPath field using Event Receiver ItemAdded method

Question

Hi,
Can we update InfoPath browser enabled form field using Event Receiver ItemAdded method. Following is the code snippet I used to update the field but it's not updating the field.
Please help me on this issue.
public override void ItemAdded(SPItemEventProperties properties)
            base.ItemAdded(properties);
            try
                //Turn off event firing so we don't end up with a conflict 
                base.EventFiringEnabled = false;
                //Run the code elevated so we can rename our item
                SPSecurity.RunWithElevatedPrivileges(delegate()
                    using (SPSite site = new SPSite(properties.Web.Site.ID))
                        using (SPWeb web = site.OpenWeb(properties.Web.ID))
                            //Grab a new copy of our list and listitem under the new security context
                            SPList list = web.Lists[properties.List.ID];
                            SPListItem item = list.Items.GetItemById(properties.ListItemId);
                            //Change name and title to match item ID
                            item.File.CheckOut();
                            string fieldInternalName = properties.List.Fields["Employee Name"].InternalName;
                            SPUser oUser = web.EnsureUser(Convert.ToString(item["Employee Entry"]).Substring(0, Convert.ToString(item["Employee Entry"]).Length - 2));
                            item[fieldInternalName] = oUser.Name;
                            item.Update();
                            item.File.CheckIn("Changed Employee Name");
            catch (Exception ex)
                //Log an errors to the ULS
            finally
                //Turn event firing back on
                base.EventFiringEnabled = true;
Srivignesh J

Answer 1

When you published your infopath form, did you promote the field you are trying to update to a property, and allow updates (its one of the steps in publishing your form, where you pick which fields you want to show as fields in the list view)... 
Otherwise, how about get the Item.SPFile object, open it as XML, find the field you want to update, and update it that way...