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# pushToArray

> Use the pushToArray task to add an element to a job array variable during workflow execution.

Add elements to an array in a workflow.

Use `pushToArray` to collect results during iterations, track errors or failures, and build lists dynamically.

**Platform 6 requirement:** Arrays must be created before using `pushToArray`. See [Platform 6 changes](#platform-6-changes) below.

## Configure pushToArray

| Property            | Type     | Required | Description                                                                          |
| :------------------ | :------- | :------: | :----------------------------------------------------------------------------------- |
| Select Job Variable | Dropdown |    Yes   | The job variable to receive the new item.                                            |
| Item Location       | Dropdown |    Yes   | Where to find the item: **Static**, **Job**, or **Earlier Task**.                    |
| Item                | Varies   |    Yes   | The value to add. Text box for **Static**; dropdown for **Job** or **Earlier Task**. |

## Example

### Track failed devices

Collect devices that fail VLAN configuration:

```
START → newVariable: failedDevices []
      → forEach deviceList
          └─→ Configure VLAN
              ├─→ success → continue
              └─→ error → pushToArray: failedDevices
```

The result is that `failedDevices` contains all devices where configuration failed.

## Platform 6 changes

### What changed

Platform 6 requires arrays to exist before use.

| Version         | Behavior                           |
| :-------------- | :--------------------------------- |
| Platform 2023.2 | Creates array automatically        |
| Platform 6      | Requires array creation before use |

### Migrate your workflows

Add a `newVariable` task before `pushToArray`:

#### Add a newVariable task

Add a new **newVariable** task to your workflow.

#### Set the variable name

Set **variableName** to your array name.

#### Set the initial value

Set **variableValue** to `[]`.

#### Position it before pushToArray

Place the `newVariable` task before `pushToArray` in the workflow.

As a best practice, create all variables at the start of the workflow. See [Workflow Best Practices](/itential-platform/studio/workflows/best-practices).

## Best practices

* **Create arrays at start:** Define all variables after the **Start** task.
* **Use descriptive names:** For example, `failedDevices` rather than `array1`.
* **Handle errors:** Add error transitions from `pushToArray`.
* **Multi-thread:** Create multiple variables in parallel.

## Related tasks

* [newVariable](/itential-platform/studio/tasks/reference/new-variable) — Create job variables.
* [query](/itential-platform/studio/tasks/reference/query) — Extract data from arrays.
* [merge](/itential-platform/studio/tasks/reference/merge) — Combine objects.

> Use the pushToArray task to add an element to a job array variable during workflow execution.