Currency Exchange Helper

CurrencyExchangeHelper currencyExchangeHelper;
CurrencyCode toCurrency = _claimLine.CurrencyClaimed;
CurrencyCode FromCurrency = modifierAward.FixedAmountCurrencyCode;
currencyExchangeHelper = CurrencyExchangeHelper::newExchangeDate(Ledger::current(), _claimLine.TreatmentDate);
fixedAmt =  currencyExchangeHelper.calculateCurrencyToCurrency(toCurrency, fromCurrency,modifierAward.FixedAmount,true);