# EnvironmentEditor.set

- Module: [Aspire.Hosting](/reference/api/typescript/aspire.hosting.md)
- Defined on: [EnvironmentEditor](/reference/api/typescript/aspire.hosting/environmenteditor.md)
- Version: `13.3.0`
- Kind: `method`

Sets an environment variable

## Definition

```typescript
interface EnvironmentEditor {
  // ... omitted for brevity
  set(
      name: string,
      value: IExpressionValue): void;
}
```

## Signature

```typescript
set(
    name: string,
    value: IExpressionValue): void
```

## Parameters

- `name` (`string`)
- `value` ([IExpressionValue](/reference/api/typescript/aspire.hosting/iexpressionvalue.md))

## Defined on

- [EnvironmentEditor](/reference/api/typescript/aspire.hosting/environmenteditor.md) -- `handle`