The value provided for the report parameter 'ActionOwnerDate_from' is not valid for its type. (rsReportParameterTypeMismatch)

Question

I am getting following error for my Reporting Services report:

Microsoft.Reporting.WinForms.ReportServerException: 'The value provided for the report parameter 'ActionOwnerDate_from' is not valid for its type. (rsReportParameterTypeMismatch)'

That error is thrown on this line:

reportViewer1.ServerReport.SetParameters(rptParameters);

Part of code where error occurs:

Note that ToString() has to be there as ReportParameter argument requires string value.

var rptParameters = new List<ReportParameter>
                        {
                            new ReportParameter("ActionOwnerDate_from",
                        DateTime.Now.AddYears(-10).AddDays(-8).ToString("dd-MM-yyyy")),
                        new ReportParameter("ActionOwnerDate_to", DateTime.Now.AddDays(-10).ToString("dd-MM-yyyy"))
                        };

                    reportViewer1.Invoke((MethodInvoker)(() => {
                        reportViewer1.ShowParameterPrompts = false;
                        reportViewer1.ServerReport.SetParameters(rptParameters);
                        reportViewer1.ServerReport.Refresh();
                        reportViewer1.RefreshReport();
                    }));

Note that:

The ActionOwnerDate_from parameter datatype is Date/Time

The Report localization's language is set to: en-US.

Screnshoots from the debugger: