Commented Unassigned: Index of RowLabel and ColumnLabel in PivotTable [9326]

File XLWorkbook_Save.cs
Line 2222
Creation of RowLabels
```
var f = new Field {Index = pt.Fields.IndexOf(xlpf)};
```
Line 2240
```
var f = new Field {Index = pt.Fields.IndexOf(xlpf)};
```
The index of RowLabels and ColumnLabels is not correct because it is based on the order of Fields Collection

Is it correct changing the code in this way?
```
var f = new Field {Index = pt.RowLabels.IndexOf(pt.RowLabels.FirstOrDefault(p => p.SourceName == xlpf.SourceName))};
```
```
var f = new Field { Index = pt.ColumnLabels.IndexOf(pt.ColumnLabels.FirstOrDefault(p => p.SourceName == xlpf.SourceName)) };
```
Comments: ``` var dt = new System.Data.DataTable(); dt.Columns.Add("col1", typeof(string)); dt.Columns.Add("col2", typeof(string)); dt.Columns.Add("col3", typeof(double)); var col1 = new string[] { "col1_val1", "col1_val2", "col1_val3" }; var col2 = new string[] { "col2_val1", "col2_val2", "col2_val3" }; var rnd = new Random(); for (int i = 0; i < 10; i++) { var row = dt.NewRow(); row["col1"] = col1[rnd.Next(0, 3)]; row["col2"] = col2[rnd.Next(0, 3)]; row["col3"] = rnd.NextDouble() * rnd.Next(10, 100); dt.Rows.Add(row); } var workbook = new XLWorkbook(); var sheet = workbook.Worksheets.Add("Sheet1"); var table = sheet.Cell(1, 1).InsertTable(dt, "Table1", true); var range = table.DataRange; var header = sheet.Range(1, 1, 1, dt.Columns.Count); var dataRange = sheet.Range(header.FirstCell(), range.LastCell()); var ptSheet = workbook.Worksheets.Add("Sheet2"); var pt = ptSheet.PivotTables.AddNew("TablePivot", ptSheet.Cell(1, 1), dataRange); // COL2 then COL1 pt.RowLabels.Add("col2"); pt.RowLabels.Add("col1"); pt.Values.Add("col3"); workbook.SaveAs("workbook.xlsx"); ``` In the output excel file, the rowfields order in the pivot table is col1 first and then col2