---
lang: en
title: 'API docs: context.inject.tag'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.context.inject.tag.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [inject](./context.inject.md) &gt; [tag](./context.inject.tag.md)

## inject.tag variable

Inject an array of values by a tag pattern string or regexp

<b>Signature:</b>

```typescript
tag: (bindingTag: string | RegExp | import("./value-promise").MapObject<any>, metadata?: InjectionMetadata | undefined) => (target: Object, member: string, methodDescriptorOrParameterIndex?: number | TypedPropertyDescriptor<any> | undefined) => void
```

## Example


```ts
class AuthenticationManager {
  constructor(
    @inject.tag('authentication.strategy') public strategies: Strategy[],
  ) {}
}

```


