# `GSFont.numbers`

*Instance Property*

Font-wide number definitions.

## Declaration

```swift
var numbers: [GSMetric]? { get set }
```

```objc
@property (nonatomic, strong) NSArray<GSMetric *> * numbers;
```

[See also `numbers` in the Python API](https://docu.glyphsapp.com/#GSFont.numbers)

```python
pyobjc_instanceMethods.numbers() -> list[GSMetric]
pyobjc_instanceMethods.setNumbers_(numbers: list[GSMetric])
```

## Discussion

Each number defines a shared measurement for number-related design data. The values for these definitions are stored on each master.

## See Also

### Numbers

- [`GSFont countOfNumbers`](/Core/GlyphsCore/GSFont/countOfNumbers) — Returns the number of number definitions.
- [`GSFont objectInNumbersAtIndex:`](/Core/GlyphsCore/GSFont/objectInNumbersAtIndex:) — Returns the number definition at an index.
- [`GSFont numberForId:`](/Core/GlyphsCore/GSFont/numberForId:) — Returns the first number definition with an identifier.
- [`GSFont numberForName:`](/Core/GlyphsCore/GSFont/numberForName:) — Returns the first number definition with a name.
- [`GSFont addNumber:`](/Core/GlyphsCore/GSFont/addNumber:) — Adds a number definition to the font.
- [`GSFont removeObjectFromNumbers:`](/Core/GlyphsCore/GSFont/removeObjectFromNumbers:) — Removes a number definition from the font.