---
url: /process-functions/hierarchy-childbyindex.md
description: Returns the name of a child element of a parent element in a hierarchy.
---

# hierarchy.childByIndex

Returns the name of a child element of a parent element in a hierarchy.

```js
hierarchy.childByIndex(dimension, hierarchy, element, index)
```

#### Parameters

* `Dimension` - The dimension in which the selected hierarchy exists.
* `Hierarchy` - The identifier of the hierarchy to search.
* `Element` - The identifier of the parent element.
* `Index` - A Zero-based index of the child to return. (Zero is the first child)

#### Example

```js
let child = hierarchy.childByIndex("Account", "Management Profit and Loss", "EBIT", 0);
```

The `child` variable will be the name of the first child of the element `EBIT` in the Management Profit and Loss Hierarchy.