Using the RecordSelectionFormula in Crystal Reports

Question

I'm trying to use the RecordSelectionFormula on a datetime field. something like: string time = DateTime.Now.ToString(); reportDocument1.RecordSelectionFormula = @"{Alarms.Moment} < " + time ; returns: "The remaining text does not appear to be a part of the formula" and: string quotes = @""""; string time = DateTime.Now.ToString(); reportDocument1.RecordSelectionFormula = @"{Alarms.Moment} < " + quotes + time + quotes; returns: "A date-time is required here" and: reportDocument1.RecordSelectionFormula = "{Alarms.Moment} < " + DateTime.Now; also returns: "The remaining text does not appear to be a part of the formula" What I'm I doing wrong?