---
title: "Create a Function Instance"
url: https://docs.catalyst.zoho.com/en/sdk/ios/v2/serverless/functions/create-function-instance/
description: "Catalyst functions enable you to build custom functionalities in your application, automate tasks, or integrate with third-party services."
last_updated: 2025-08-28T06:31:44Z
service: Serverless
type: general
related_links:
  - name: "Functions"
    url: /en/serverless/help/functions/introduction
  - name: "Function - API"
    url: /en/api/code-reference/serverless/functions/execute-function/#ExecuteFunction
---

# Create a Function Instance

[Catalyst functions](https://docs.catalyst.zoho.com/en/serverless/help/functions/introduction) enable you to build custom functionalities in your application, automate tasks, or integrate with third-party services. You can develop functions for your iOS app from the Catalyst console or the CLI.

### Create a Function Instance

You can create an instance of a Catalyst function using the `getFunctionInstance()` method, and enable the methods defined in this class to access the instance object. This will prevent unnecessary server calls.

You can create a function instance in any of the following ways:

#### i. By passing the Function ID

You can pass the function's unique Function ID as an argument to the `getFunctionInstance()` method and create an instance for it:

```bash
ZCatalystApp.shared.getFunctionInstance( id : Int64 ) -> ZCatalystFunction
```

**Parameters**:

* `id`: The unique [Function ID](https://docs.catalyst.zoho.com/en/serverless/help/functions/introduction) of the function.

A sample code snippet is shown below:

```bash
let function_instance = ZCatalystApp.shared.getFunctionInstance ( id : 1096000000002053 ) //Replace this with your Function ID
```

#### ii. By passing the name of the function

You can pass the function's API name as an argument to the `getFunctionInstance()` method and create an instance for it:

```bash
ZCatalystApp.shared.getFunctionInstance( name : String ) -> ZCatalystFunction
```

**Parameters**:

* `name`: The name of the function configured in Catalyst

A sample code snippet is shown below:

```bash
let function_instance = ZCatalystApp.shared.getFunctionInstance ( name : "LocalBackup") //Replace this with you function name
```