[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Runtime](./puppeteer.protocol.runtime.md) > [CustomPreview](./puppeteer.protocol.runtime.custompreview.md) > [bodyGetterId](./puppeteer.protocol.runtime.custompreview.bodygetterid.md) ## Protocol.Runtime.CustomPreview.bodyGetterId property If formatter returns true as a result of formatter.hasBody call then bodyGetterId will contain RemoteObjectId for the function that returns result of formatter.body(object, config) call. The result value is json ML array. Signature: ```typescript bodyGetterId?: RemoteObjectId; ```