Custom Property

This document covers Custom Properties that you can define and collect according to your needs.

📘 To use Custom Properties

1. SDK integration is required. (Code work needed!)

2. The SDKs that support Custom Properties are as follows:

• Android

• iOS

• JavaScript

• React

• React Native

• Java/Kotlin

• Python

• Node.js

Design Rules

Apply the following rules when designing Custom Properties.

1. The subjects that can have properties assigned are users.

2. A user can have up to 64 properties.

3. Property values must be expressible as yes/no, number, or string.

4. For property values, numbers can have up to 15 integer digits and 6 decimal places, and strings can be up to 64 characters.

How to Use

1. Hackle SDK integration is required. Check the SDK integration method for the language that supports Custom Properties in the SDK category.

2. Send to Hackle using the method that accepts a user object as a parameter. Refer to the User Identifier & Properties document for each language in the SDK category.

Reference documents for developers

Language	SDK Integration	User Identifier & Properties
Android	[Android SDK Integration](../../개발자 문서/android/android-sdk-init.md)	[User Identifier & Properties for Android SDK](../../개발자 문서/android/android-user-info/index.md)
iOS	[iOS SDK Integration](../../개발자 문서/ios/ios-sdk-init.md)	[User Identifier & Properties for iOS SDK](../../개발자 문서/ios/ios-user-info/index.md)
JavaScript	[JavaScript SDK Integration](../../개발자 문서/javascript/js-sdk-init.md)	[User Identifier & Properties for JavaScript SDK](../../개발자 문서/javascript/js-user-info/index.md)
React	[React SDK Integration](../../개발자 문서/react/react-sdk-init.md)	[User Identifier & Properties for React SDK](../../개발자 문서/react/react-user-info/index.md)
React Native	[React Native SDK Integration](../../개발자 문서/react-native/react-native-sdk-init.md)	[User Identifier & Properties for React Native SDK](../../개발자 문서/react-native/react-native-user-info/index.md)
Java/Kotlin	[Java/Kotlin SDK Integration](../../개발자 문서/java-kotlin/java-sdk-init.md)	[User Identifier & Properties for Java/Kotlin SDK](../../개발자 문서/java-kotlin/java-user-info/index.md)
Python	[Python SDK Integration](../../개발자 문서/python/python-sdk-init/index.md)	[User Identifier & Properties for Python SDK](../../개발자 문서/python/python-user-info.md)
Node.js	[Node.js SDK Integration](../../개발자 문서/node-js/node-sdk-init.md)	[User Identifier & Properties for Node.js SDK](../../개발자 문서/node-js/node-user-info/index.md)