---
tags: [CustomVariable, variable, service catalog, custom]
---
# CustomVariable

A CatalogItem variable for a custom UI component field.

## Signature

```typescript fluent
CustomVariable(config)
```

## Parameters

### config

`CustomVariableType<'sys_ui_macro', 'sys_ui_macro', 'sp_widget', 'sys_ux_macroponent', 'sys_cs_topic', string | ExplicitKey<string> | Record<'sp_widget'> | Record<'sys_ui_macro'> | Record<'sys_ux_macroponent'> | Record<'sys_cs_topic'>>`

Configuration for the custom UI component variable including:

**Properties:**

- **question** (required): `string`

- **active** (optional): `boolean`

- **alwaysExpand** (optional): `boolean`
  Always expand

- **attributes** (optional): `string`
  Attributes of the variable

- **category** (optional): `string`
  Category

- **conversationalLabel** (optional): `string`

- **createRoles** (optional): `(string | Role)[]`

- **defaultValue** (optional): `string | Type`

- **deliveryPlan** (optional): `string`
  Delivery plan

- **dependentQuestion** (optional): `string`
  Dependent question for dynamic default value

- **description** (optional): `string`
  Description

- **disableInitialSlotFill** (optional): `boolean`

- **dotWalkPath** (optional): `string`
  Dot walk path for dynamic default value

- **exampleText** (optional): `string`

- **field** (optional): `string`
  Field to map (required when mapToField is true)

- **global** (optional): `boolean`
  Global

- **helpTag** (optional): `string`

- **helpText** (optional): `string`

- **instructions** (optional): `string`

- **layout** (optional): `'normal' | '2across' | '2down'`
  Layout style for the container

- **macro** (optional): `string | Record<MacroRefTable>`
  Reference to a sys_ui_macro record

- **macroponent** (optional): `string | Record<MacroponentRefTable>`
  Reference to a sys_ux_macroponent record

- **mapToField** (optional): `boolean`
  Map to field

- **order** (optional): `number`
  Order in which the variable appears

- **postInsertScript** (optional): `string`
  Post insert script

- **pricingDetails** (optional): `PricingDetail[]`
  Pricing details

- **pricingImplications** (optional): `boolean`
  Pricing implications

- **readRoles** (optional): `(string | Role)[]`

- **readScript** (optional): `string`
  Read script

- **removeFromConversationalInterfaces** (optional): `boolean`
  Remove from Conversational Interfaces

- **showHelp** (optional): `boolean`

- **summaryMacro** (optional): `string | Record<SummaryRefTable>`
  Reference to a sys_ui_macro record for summary

- **tooltip** (optional): `string`

- **topicBlock** (optional): `string | Record<TopicRefTable>`
  Reference to a sys_cs_topic record

- **unique** (optional): `boolean`
  Unique value

- **useDynamicDefault** (optional): `boolean`
  Use dynamic default

- **visibility** (optional): `'Always' | 'Bundle' | 'Standalone'`
  Visibility

- **visibleBundle** (optional): `boolean`

- **visibleGuide** (optional): `boolean`
  Indicates whether the variable is visible in guides

- **visibleStandalone** (optional): `boolean`
  Indicates whether the variable is visible when standalone

- **visibleSummary** (optional): `boolean`
  Indicates whether the variable is visible in summaries

- **widget** (optional): `string | Record<WidgetRefTable>`
  Reference to a sp_widget record

- **width** (optional): `100 | 25 | 50 | 75`
  Width of the variable

- **writeRoles** (optional): `(string | Role)[]`


## See

- https://docs.servicenow.com/csh?topicname=variable-types.html&version=latest