输入：原来的货币，转换的货币，时间
输出：AX系统的Exchange rate
public static ExchRate getExchRateFind(CurrencyCode _fromCurrency,
CurrencyCode _toCurrency,
TransDate _transDate = systemDateGet())
{
ExchangeRateHelper exchangeRateHelper;
exchangeRateHelper = ExchangeRateHelper::newCurrencyToCurrency(_fromCurrency,_toCurrency);
exchangeRateHelper.parmExchangeDate(_transDate);
exchangeRateHelper.parmExchangeRateTypeRecId(Ledger::defaultExchangeRateType());
return exchangeRateHelper.getExchangeRate1()/100;
}
