---
title: paramSize
framework: Core Services
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/componentparameters/1516330-paramsize
---

# paramSize

Specifies the number of bytes of parameter data for this request. The actual parameters are stored in the `params` field.

## Declaration

```occ
UInt8 paramSize;
```