[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [CallFunctionOnRequest](./puppeteer.protocol.runtime.callfunctiononrequest.md) > [returnByValue](./puppeteer.protocol.runtime.callfunctiononrequest.returnbyvalue.md) ## Protocol.Runtime.CallFunctionOnRequest.returnByValue property Whether the result is expected to be a JSON object which should be sent by value. Signature: ```typescript returnByValue?: boolean; ```