---
category: [Administration & Integrations, Platform and Product Extensions, Platform and Product Extensions/Integration, Administration & Integrations/Custom Integrations & Apps, Platform and Product Extensions/Workday Extend]
keyword: [Extend, PMD Scripting, Scripts]
nav: wcp_docs
parent_url: /wcp_docs/
title: createMapList (list, key)
layout: subsection
---

## <a id="section_m3p_myb_5db"></a>Description

Transforms a list of values and returns a mapped list of key/value pairs. Each value in this list will be objects, each referenced by the given key. `createMapList` is useful for transforming raw data into objects.

## <a id="section_cyq_j1m_zsb"></a>Return Type

`List`

## <a id="section_dz5_pwg_5db"></a>Namespace Function Syntax

```
list:createMapList(list, key)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>list</td><td>An array of values.</td></tr><tr><td>key</td><td>The attribute key for the transformed list.</td></tr></tbody></table><br/>

<b>Example</b>

Assume <i>theList</i> is <i>['my', 'list']</i>.

`list:createMapList(theList, 'key')`

Returns `[{'key': 'my'}, {'key': 'list'}]`