setRangeConditionalFormatDefault Format doesnot work

luckysheet.setRangeConditionalFormatDefault(
        "textContains",
        ["Expense Group"],
        {
          format: {
            textColor: "#000000",
            cellColor: "#ff0000",
          },
          cellrange: "A1:A" + rows_in_sheet,
        }
      );