public void set_LotString(String value) { if (StringHelper.isNullOrEmpty(value)) { if (this._isBuyForCurrent) { this._buyLot = BigDecimal.ZERO; } else { this._sellLot = BigDecimal.ZERO; } } else { if (this._isBuyForCurrent) { this._buyLot = AppToolkit.convertStringToBigDecimal(value); } else { this._sellLot = AppToolkit.convertStringToBigDecimal(value); } } }