# Concatenate

Concatenates two strings into a single string. Concatenate lives in the **Custom** category of the `fx` menu.

## Parameters

| Parameter | Type   | Required | Default | Description                                            |
| --------- | ------ | -------- | ------- | ------------------------------------------------------ |
| Input     | string | yes      | —       | Value to transform. Previous step output or a literal. |
| To concat | string | yes      | —       | The string to concatenate to the function input.       |

`Input` is the primary value (previous step output or a literal).

## Returned value

| Type     | Description                               |
| -------- | ----------------------------------------- |
| `string` | Result of the Concatenate transformation. |

## Example

<details>
<summary>Run Concatenate</summary>

Concatenates two strings into a single string. Adjust optional parameters when the defaults do not match your payload.

1. Set **Input** to the value to transform (previous step output or a literal).

2. Review **To concat** and keep defaults unless your format requires otherwise.

3. Confirm **Output value** shows the transformed result.

</details>