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[Home](./index.md) &gt; [puppeteer](./puppeteer.md) &gt; [Protocol](./puppeteer.protocol.md) &gt; [Debugger](./puppeteer.protocol.debugger.md) &gt; [EvaluateOnCallFrameRequest](./puppeteer.protocol.debugger.evaluateoncallframerequest.md)

## Protocol.Debugger.EvaluateOnCallFrameRequest interface

<b>Signature:</b>

```typescript
export interface EvaluateOnCallFrameRequest 
```

## Properties

|  Property | Type | Description |
|  --- | --- | --- |
|  [callFrameId](./puppeteer.protocol.debugger.evaluateoncallframerequest.callframeid.md) | [CallFrameId](./puppeteer.protocol.debugger.callframeid.md) | Call frame identifier to evaluate on. |
|  [expression](./puppeteer.protocol.debugger.evaluateoncallframerequest.expression.md) | string | Expression to evaluate. |
|  [generatePreview](./puppeteer.protocol.debugger.evaluateoncallframerequest.generatepreview.md) | boolean | Whether preview should be generated for the result. |
|  [includeCommandLineAPI](./puppeteer.protocol.debugger.evaluateoncallframerequest.includecommandlineapi.md) | boolean | Specifies whether command line API should be available to the evaluated expression, defaults to false. |
|  [objectGroup](./puppeteer.protocol.debugger.evaluateoncallframerequest.objectgroup.md) | string | String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>). |
|  [returnByValue](./puppeteer.protocol.debugger.evaluateoncallframerequest.returnbyvalue.md) | boolean | Whether the result is expected to be a JSON object that should be sent by value. |
|  [silent](./puppeteer.protocol.debugger.evaluateoncallframerequest.silent.md) | boolean | In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state. |
|  [throwOnSideEffect](./puppeteer.protocol.debugger.evaluateoncallframerequest.throwonsideeffect.md) | boolean | Whether to throw an exception if side effect cannot be ruled out during evaluation. |
|  [timeout](./puppeteer.protocol.debugger.evaluateoncallframerequest.timeout.md) | [Runtime.TimeDelta](./puppeteer.protocol.runtime.timedelta.md) | Terminate execution after timing out (number of milliseconds). |