Setting DateTime Parameter Value when Scheduling Report

I am attempting to schedule a report from code. I am currently running, on Server 2008, BO 4.0,  BO Service Pack 4.0.9. and .NET SDK 14.0.4. When the code tries to set the value for a parameter for a CeReportVariableValueType = ceRVDateTime, I get the following error "One or more arguments are invalid" when trying to set the "parmValue.SingleValue.Value = dateParm" (see highlighted code below). I tried to reformat the date a number of different ways, but have had no luck.

Below is the code for scheduling the report. The code does work for reports that do not have a datetime parameter.

Any help would be greatly appreciated,

Angela

private void ScheduleReportWithParameters(string reportName, ArrayList parameters, SmtpData smtpData)

{

    //Retrieves report by report name

    string rptQuery = "SELECT * FROM CI_INFOOBJECTS WHERE SI_NAME='" + reportName + "' AND SI_INSTANCE = 0";

    InfoObjects infoObjects = infoStore.Query(rptQuery);

    InfoObject infoObject = infoObjects[1];

    report = new Report(infoObject.PluginInterface);

    //Setting scheduling info

    SchedulingInfo schedulingInfo = report.SchedulingInfo;

    schedulingInfo.Type = CeScheduleType.ceScheduleTypeOnce;

    schedulingInfo.RightNow = true;

    //Retrieves SMPT Settings, SI_PARENTID must be equal to 29

    var smtpQuery = "SELECT SI_DEST_SCHEDULEOPTIONS, SI_PROGID FROM CI_SYSTEMOBJECTS WHERE SI_PARENTID=29 and SI_NAME='CrystalEnterprise.SMTP'";

    InfoObjects destinationInfoObjects = infoStore.Query(smtpQuery);

    infoObject = destinationInfoObjects[1];

    DestinationPlugin destinationPlugin = (DestinationPlugin)infoObject;

    Smtp smtp = (Smtp)destinationPlugin;

    DestinationOptions destinationOptions = smtp.ScheduleOptions;

    SmtpOptions smtpOptions = new SmtpOptions(destinationOptions);

    smtpOptions.CCAddresses.Add(smtpData.CcAddresses);

    smtpOptions.ToAddresses.Add(smtpData.ToAddresses);

    smtpOptions.Attachments.Add(report.MimeType, smtpData.AttachmentPath + ".%EXT%");

    smtpOptions.Subject = smtpData.Subject;

    smtpOptions.Message = smtpData.Body;

    schedulingInfo.Destination.SetFromPlugin(smtp);

    //Setting Report parameters

    ReportParameters reportParameters = report.ReportParameters;

    for (int i = 1; i <= reportParameters.Count; i++)

    {

        ReportParameter reportParameter = reportParameters[i];

        reportParameter.CurrentValues.Clear();

        ReportParameterValue parmValue = reportParameters[i].CreateSingleValue();

        if (reportParameter.ValueType == CeReportVariableValueType.ceRVDateTime)

        {

            var dateParm = string.Format("DateTime(" + parameters[i - 1].ToString().Replace("/", ", ") + ", 00, 00, 00)");

           parmValue.SingleValue.Value = dateParm;

        }

        else if (reportParameter.ValueType == CeReportVariableValueType.ceRVDate)

        {

            var dateParm = "DateTime(" + parameters[i - 1].ToString().Replace("/", ", ") + ")";

            parmValue.SingleValue.Value = dateParm;

        }

        else

        {

            parmValue.SingleValue.Value = parameters[i - 1].ToString();

        }

        reportParameter.CurrentValues.Add(parmValue);

    }

    //Sending scheduled report to server

    InfoObjects infoObjectsParent = report.ParentInfoObjects;

    infoStore.Schedule(infoObjectsParent);

}