---
title: "toDataSet"
description: "Tries to coerce value into a dataset."
---

# toDataSet

> Tries to coerce value into a dataset.

**This function is used by Ignition's Expression language**.

## Description
Tries to coerce value into a dataset. Not many things can be coerced into datasets. Namely, only datasets and PyDatasets can be coerced into datasets. This is useful for the [runScript()](../advanced/runScript.md) expression, to convince the expression compiler to let you assign the return value of a scripting function to a dataset property.

## Syntax
`toDataSet(value[, failover])`

### Parameters

| Type | Parameter | Description |
|---|---|---|
| Object | `value` | The value to type cast, typically a DataSet or PyDataSet. |
| Object | `failover` | The failover value if type casting fails. [optional] |

### Results
**Dataset** - The value type cast as a dataset.

## Examples
```python title="Code Snippet"
toDataSet(runScript("app.funcs.runSomeFunction()")) //coerces the value returned by a project scripting function into a dataset.
```