/// <summary>
/// Load Specific Document Details
/// </summary>
/// <returns>error message or null</returns>
public override String LoadDocumentDetails()
{
MCash cash = (MCash)GetPO();
SetDateDoc(cash.GetStatementDate());
BeginningBalance = cash.GetBeginningBalance();
HeaderCasbookID = cash.GetC_CashBook_ID();
// Amounts
SetAmount(Doc.AMTTYPE_Gross, cash.GetStatementDifference());
// Set CashBook Org & Currency
MCashBook cb = MCashBook.Get(GetCtx(), cash.GetC_CashBook_ID());
SetC_CashBook_ID(cb.GetC_CashBook_ID());
SetC_Currency_ID(cb.GetC_Currency_ID());
// Contained Objects
_lines = LoadLines(cash, cb);
log.Fine("Lines=" + _lines.Length);
return(null);
}