public Int64 GetDUSOH(int itemID, int receivingUnit, int month, int year)
 {
     Int64 quantity = 0;
     int yr = ((month > 10) ? year : year + 1);
     IssueDoc iss = new IssueDoc();
     quantity = iss.GetDUSOHByMonth(itemID, receivingUnit, month, yr);
     return quantity;
 }