---
title: "OTHER Builtin"
description: "Retrieve the other option value from choice field (SingleChoiceField or MultiChoiceField)"
category: "choice"
tags: ["choice", "other", "custom", "multichoice"]
---

# OTHER Function

The `OTHER` builtin retrieves the other label if the user entered an other option in a choice field, returning `null` if no other option is present. Works with both SingleChoiceField (single selection) and MultiChoiceField (multiple selections).

## Syntax

```javascript
OTHER(choiceField)
```

## Parameters

| Parameter | Type | Description |
|-----------|------|-------------|
| `choiceField` | `Object` | The choice field object (SingleChoiceField with choice array or MultiChoiceField with choices array) and other array |

## Return Value

Returns the other label as a string if user entered an other option, `null` otherwise.

## Examples

### Basic Usage - SingleChoiceField

```javascript
// Get the other value from single choice field
OTHER($city)
```

### Basic Usage - MultiChoiceField

```javascript
// Get the other value from multi choice field
OTHER($colors)
```

### Conditional Logic

```javascript
// Use in conditional expressions for single choice
IF(HASOTHER($city), "Custom city: " + OTHER($city), "No custom city entered")

// Use in conditional expressions for multi choice
IF(HASOTHER($colors), "Custom color: " + OTHER($colors), "No custom color entered")
```

### Display Logic

```javascript
// Show other value in display
"Additional info: " + OTHER($comments)
```

### Validation

```javascript
// Validate other input length
OTHER($reason).length > 10
```

## Common Use Cases

- **Custom input display**: Show user-entered custom values
- **Conditional logic**: Make decisions based on other option content
- **Validation**: Validate the content of other options
- **Data processing**: Extract custom values for further processing
- **Multi-choice support**: Works seamlessly with both single and multiple choice fields

## Best Practices

1. **Check with HASOTHER**: Always use `HASOTHER()` to check if other option exists before using `OTHER()`
2. **Handle null values**: Always handle the case where `OTHER()` returns null
3. **Validation**: Validate other inputs for length, format, etc.
4. **User feedback**: Provide clear feedback about other option values
5. **Multi-choice compatibility**: Works with both SingleChoiceField and MultiChoiceField

## Related Functions

- [`HASOTHER`](./hasother.mdx) - Check if other option is selected
- [`CHOICEVALUE`](./choicevalue.mdx) - Get the selected choice value (SingleChoiceField)
- [`CHOICELABEL`](./choicelabel.mdx) - Get the selected choice label (SingleChoiceField)
- [`CHOICEVALUES`](./choicevalues.mdx) - Get all selected choice values (MultiChoiceField)
- [`CHOICELABELS`](./choicelabels.mdx) - Get all selected choice labels (MultiChoiceField)

## Examples by Use Case

### Custom Input Display - SingleChoiceField

```javascript
// Display custom input with fallback
IF(HASOTHER($industry), "Industry: " + OTHER($industry), "Industry: " + CHOICELABEL($industry))
```

### Custom Input Display - MultiChoiceField

```javascript
// Display custom input with fallback for multi-choice
IF(HASOTHER($skills), "Custom skill: " + OTHER($skills), "Skills: " + CHOICELABELS($skills).join(", "))
```

### Validation Rules

```javascript
// Ensure other input meets requirements
IF(HASOTHER($reason), OTHER($reason).length >= 5, true)
```

### Data Processing - SingleChoiceField

```javascript
// Process other values differently
IF(HASOTHER($category), "CUSTOM: " + OTHER($category), "STANDARD: " + CHOICEVALUE($category))
```

### Data Processing - MultiChoiceField

```javascript
// Process other values differently for multi-choice
IF(HASOTHER($categories), "CUSTOM: " + OTHER($categories), "STANDARD: " + CHOICEVALUES($categories).join(", "))
```

### Form Summary

```javascript
// Include other values in form summary
"Additional comments: " + (HASOTHER($comments) ? OTHER($comments) : "None")
```

## Null Handling

Always handle the null case when using `OTHER()`:

```javascript
// Safe usage with null check
IF(HASOTHER($field), OTHER($field) || "No value", "Standard selection")
```

## Field Type Compatibility

- **SingleChoiceField**: Single selection with optional other input
- **MultiChoiceField**: Multiple selections with optional other input
- **Note**: User can only add 1 other option regardless of field type
- **Return value**: Always returns a single string (the other label) or null