public JsonResult UpdateCostClosingDate(String loanId, String closingDate)
        {
            try
            {
                if (string.IsNullOrEmpty(loanId) || string.IsNullOrEmpty(closingDate))
                {
                    throw new ArgumentNullException("Loan Id and Closing Date are required");
                }

                int      userAccountId      = IdentityManager.GetUserAccountId();
                Guid     loanIdGuid         = new Guid(loanId);
                DateTime enteredClosingDate = DateTime.Parse(closingDate);

                UserAccount loggedUser         = ( UserAccount )System.Web.HttpContext.Current.Session[SessionHelper.UserData];
                var         closingDateHistory = new ClosingDateHistory
                {
                    ClosingDate  = enteredClosingDate,
                    DateOfChange = DateTime.Now,
                    LoanId       = loanIdGuid,
                    UserName     = loggedUser.Party.FirstName + " " + loggedUser.Party.LastName
                };

                LoanServiceFacade.UpdateManuallyEnteredCloseDate(loanIdGuid, true, userAccountId);
                LoanServiceFacade.UpdateLoanClosingDate(loanIdGuid, enteredClosingDate, userAccountId);
                CostServiceFacade.UpdateCostsAndClosingDate(loanIdGuid, enteredClosingDate, userAccountId);
                LoanServiceFacade.CreateClosingDateHistory(closingDateHistory, userAccountId);


                var model = ManageFeesHelper.GetCostByLoanId(loanIdGuid, loggedUser, HttpContext);

                var group901  = model.CostGroups.FirstOrDefault(x => x.CostGroupNumber == 90).Costs.FirstOrDefault(x => x.HUDLineNumber == 901);
                var group1002 = model.CostGroups.FirstOrDefault(x => x.CostGroupNumber == 10).Costs.FirstOrDefault(x => x.HUDLineNumber == 1002);
                var group1004 = model.CostGroups.FirstOrDefault(x => x.CostGroupNumber == 10).Costs.FirstOrDefault(x => x.HUDLineNumber == 1004);

                int isClosingDateChanged = model.HasClosingDateHistory ? 1 : 0;
                return(Json(new { success = true, group901 = group901, group1002 = group1002, group1004 = group1004, isClosingDateChanged = isClosingDateChanged }));
            }
            catch (Exception exception)
            {
                TraceHelper.Error(TraceCategory.LoanCenter, "_closingcosts.cshtml::UpdateCostClosingDate", exception, Guid.Empty, IdentityManager.GetUserAccountId());
                return(Json(new { success = false }));
            }
        }