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SCSFExport scsf_GetStudyPersistentVariableFromChartExample(SCStudyInterfaceRef sc)
{
  SCInputRef ChartStudyReference = sc.Input[0];

  if (sc.SetDefaults)
  {
    // Set the configuration and defaults

    sc.GraphName = "Get Study Persistent Variable from Chart Example";
    sc.AutoLoop = 1;
    sc.FreeDLL = 0;

    ChartStudyReference.Name = "Chart Study Reference";
    ChartStudyReference.SetChartStudyValues(1, 0);

    return;
  }

  //Set persistent float variable with a value of 100 using integer key 1.
  float& r_PersistentFloat = sc.GetPersistentFloat(1);
  r_PersistentFloat = 100;

  // Get a reference to a persistent variable with key value 1 in the chart
  // and study specified by the "Chart Study Reference" input. Assuming the
  // "Chart Study Reference" input is referencing this particular chart and
  // study instance, then this function will return 100.
  const float PersistentValue = sc.GetStudyPersistentFloatFromChartStudy(ChartStudyReference.GetChartNumber(), ChartStudyReference.GetStudyID(), 1);

  if (sc.Index == sc.ArraySize - 1)
  {
    SCString OutputText;
    OutputText.Format("%f", PersistentValue);

    sc.AddMessageToLog(OutputText, 0);
  }
}