public override void Reload()
        {
            base.Reload();

            // reload debts
            _viewModel.Entities = new ObservableCollection <DebtViewModel>(
                _service.GetListForUser(GlobalVariables.UserId)
                .Select(e => new DebtViewModel(e))
                .OrderBy(_ => _.IsRepaid)
                .ThenByDescending(_ => _.TakingDate));
        }