# ReferenceExpressionBuilder.appendLiteral

- Module: [Aspire.Hosting](/reference/api/typescript/aspire.hosting.md)
- Defined on: [ReferenceExpressionBuilder](/reference/api/typescript/aspire.hosting/referenceexpressionbuilder.md)
- Version: `13.4.0`
- Kind: `method`

Appends a literal value to the expression.

## Definition

```typescript
interface ReferenceExpressionBuilder {
  // ... omitted for brevity
  appendLiteral(value: string): void;
}
```

## Signature

```typescript
appendLiteral(value: string): void
```

## Parameters

- `value` (`string`)

## Defined on

- [ReferenceExpressionBuilder](/reference/api/typescript/aspire.hosting/referenceexpressionbuilder.md) -- `handle`