# SpreadsheetGetLastRowNumber

Retrieves the row number of the last row with data in a spreadsheet.

## Method Signature

```
SpreadsheetGetLastRowNumber(spreadsheetObj=[any])
```

### Arguments

| Argument         | Type  | Required | Description             | Default |
| ---------------- | ----- | -------- | ----------------------- | ------- |
| `spreadsheetObj` | `ANY` | `true`   | The spreadsheet object. |         |

## Examples

Get the last row with data:

```js
// Find last row
var spreadsheet = SpreadsheetNew();
SpreadsheetAddRows( spreadsheet, [ ["Row1"], ["Row2"], ["Row3"] ] );
var lastRow = SpreadsheetGetLastRowNumber( spreadsheet );
println( "Last row: " & lastRow );  // Output: 3
```

Append data to end:

```js
// Add to end of spreadsheet
var spreadsheet = SpreadsheetRead( "/path/to/file.xlsx" );
var lastRow = SpreadsheetGetLastRowNumber( spreadsheet );
SpreadsheetSetCellValue( spreadsheet, lastRow + 1, 1, "New data" );
```

## Related

* [SpreadsheetGetColumnCount()](/boxlang-+-++/modules/bx-spreadsheet/built-in-functions/spreadsheetgetcolumncount.md) - Get column count
* [SpreadsheetInfo()](/boxlang-+-++/modules/bx-spreadsheet/built-in-functions/spreadsheetinfo.md) - Get spreadsheet info
* [SpreadsheetAddRow()](/boxlang-+-++/modules/bx-spreadsheet/built-in-functions/spreadsheetaddrow.md) - Add a row


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