activeSheet.getCell(0, 0).backColor("yellow");
activeSheet.getCell(0, 0).value(10);
activeSheet.setValue(0, 2, 15);
var sourceRange = new GcSpread.Sheets.Range(0, 0, 1, 1);
var targetRange = new GcSpread.Sheets.Range(0, 1, 1, 3);
var dragFillOption = new GcSpread.Sheets.UndoRedo.DragFillExtent(sourceRange, targetRange, GcSpread.Sheets.AutoFillType.FillFormattingOnly, GcSpread.Sheets.FillDirection.Right);
var fillAction = new GcSpread.Sheets.UndoRedo.DragFillUndoAction(activeSheet, dragFillOption);
fillAction.execute();