---
title: "init(owner:name:variability:isCustom:)"
framework: usdkit
role: symbol
role_heading: Initializer
path: "usdkit/usdprim/relationship/spec/init(owner:name:variability:iscustom:)"
---

# init(owner:name:variability:isCustom:)

Creates a new relationship spec under the given prim spec.

## Declaration

```swift
init?(owner: USDPrim.Spec, name: USDToken, variability: USDPrim.Property.Variability = .varying, isCustom: Bool = true)
```

## Parameters

- `owner`: The prim spec that owns the new relationship.
- `name`: The relationship’s name.
- `variability`: The relationship’s variability.
- `isCustom`: Whether the relationship is authored as custom.