Getting the Point X and Y axis value

I have a Delphi 2005 VCL application where I am creating DBCharts at runtime.  I need to know the values of the point the use clicks on the series in the chart.  For example, my series has dates on the X axis and numbers on the Y axis.  So I would like to know that a user has clicked on the point (1/1/2005, 5) where 1/1/2005 is the X axis value and 5 is the Y axis value of the point.  I am using the code below but all I am getting is the numerical value of the index and not the actual value of the point.  Such that point (1/1/2005, 5) is the 3rd point displayed, I am getting the index value of 2 and not 1/1/2005 or 5.  Can someone help?


procedure TMultiDBChart.DoClickSeries(Sender: TCustomChart; Series: TChartSeries; ValueIndex: Integer; Button: TMouseButton; Shift: TShiftState; x, y: Integer);
var
dbValue: Double;
dbValue2: Double;
strValue: String;
begin
dbValue := Series.XValue[ValueIndex];
strValue := Series.XValueToText(dbValue);
dbValue2:=Series.YValues.Locate(Series.YValue[ValueIndex]);

end;