var spread = new GC.Spread.Sheets.Workbook(document.getElementById('ss'), { sheetCount: 1 });
sheet = spread.getSheet(0);

//formulaToRangesメソッドを使用してセル範囲を作成します。
cellRanges = GC.Spread.Sheets.CalcEngine.formulaToRanges(sheet, 'B3:D5', 0, 0);

//セル範囲の行または列のインデックス、および行数または列数を数式に取得します。
console.log("Starting Row Index of cell range 'B3:D5' is " + cellRanges[0].ranges[0].row);
console.log("Starting Column Index of cell range 'B3:D5' is " + cellRanges[0].ranges[0].col);
console.log("RowCount of cell range 'B3:D5' is " + cellRanges[0].ranges[0].rowCount);
console.log("ColCount of cell range 'B3:D5' is " + cellRanges[0].ranges[0].colCount);