var data = new GC.Spread.Sheets.Range(1, 0, 8, 1);
var setting = new GC.Spread.Sheets.Sparklines.SparklineSetting();
setting.options.showMarkers = true;
activeSheet.addSpan(13, 0, 4, 3, null);
activeSheet.setSparkline(13, 0, data, GC.Spread.Sheets.Sparklines.DataOrientation.vertical, GC.Spread.Sheets.Sparklines.SparklineType.line, setting);
activeSheet.setValue(1, 0, 1);
activeSheet.setValue(2, 0, -2);
activeSheet.setValue(3, 0, -1);
activeSheet.setValue(4, 0, 6);
activeSheet.setValue(5, 0, 4);
activeSheet.setValue(6, 0, -4);
activeSheet.setValue(7, 0, 3);
activeSheet.setValue(8, 0, 8);

var jsonStr = null;
jsonStr = JSON.stringify(setting.toJSON());
alert(jsonStr);