WL6-9-DataSeries-vs-WL7-TimeSeries-construction

In WL6.9 I have many DataSeries I use in my strategy decisions. A simple example is :

CODE:
DataSeries y = new DataSeries(Bars, "y")
double x = 1;
for (int n = 0;  n< Bars.Count; n++)
 {
          y[n] = x++;
  }

After many hours of searching the discussions and the various other ways of finding "How to Examples", I have not succeeded. I have tried the code below:

CODE:
TimeSeries y = new TimeSeries(bars ,"  ????? " )
double x = 1;
for (int n = 0;  n< bars.Count; n++)
 {
          y[n] = x++;
  }

Nothing I try in the " ????? " works and the clues on the screen or not helping.

Please help.