---
description: Learn how to overwrite your native Android and iOS project configurations before building in Capawesome Cloud.
title: Overwrite Native Configurations - Capawesome
image: https://capawesome.io/docs/assets/images/social/cloud/native-builds/guides/native-configurations.png
---

[ Skip to content](#overwrite-native-configurations) 

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# Overwrite Native Configurations[¶](#overwrite-native-configurations "Permanent link")

You can automatically overwrite your native Android and iOS project configurations before building in [Capawesome Cloud](/). This is useful for modifying app identifiers, display names, version numbers, and other native configurations based on your build environment or branch.

This guide shows you how to use [Trapeze](https://trapeze.dev/), a mobile app configuration tool, to automate native project modifications during the build process.

## Installation[¶](#installation "Permanent link")

First, install Trapeze as a development dependency in your project:

`[](#%5F%5Fcodelineno-0-1)npm install --save-dev @trapezedev/configure
`

## Configuration File[¶](#configuration-file "Permanent link")

Create a configuration file named `capawesome.yml` in the root of your project. This file defines the native configurations you want to overwrite.

Here's a basic example that modifies the App ID and display name:

`[](#%5F%5Fcodelineno-1-1)platforms:
[](#%5F%5Fcodelineno-1-2)  android:
[](#%5F%5Fcodelineno-1-3)    packageName: com.example.myapp
[](#%5F%5Fcodelineno-1-4)    appName: My App
[](#%5F%5Fcodelineno-1-5)  ios:
[](#%5F%5Fcodelineno-1-6)    bundleId: com.example.myapp
[](#%5F%5Fcodelineno-1-7)    displayName: My App
`

Platform-specific configurations 

Trapeze uses platform-specific keys for similar configurations. For example, Android uses `packageName` while iOS uses `bundleId`. Refer to the [Android](https://trapeze.dev/docs/Operations/android) and [iOS](https://trapeze.dev/docs/Operations/ios) operation guides for complete lists of available configurations.

## Build Script[¶](#build-script "Permanent link")

Add an npm script to your `package.json` that runs Trapeze for Android and iOS platforms before the web build process:

`[](#%5F%5Fcodelineno-2-1){
[](#%5F%5Fcodelineno-2-2)  "scripts": {
[](#%5F%5Fcodelineno-2-3)    "capawesome:build": "if [ \"$CI_PLATFORM\" = \"ios\" ] || [ \"$CI_PLATFORM\" = \"android\" ]; then npx trapeze run capawesome.yml -y --$CI_PLATFORM; fi && npm run build"
[](#%5F%5Fcodelineno-2-4)  }
[](#%5F%5Fcodelineno-2-5)}
`

Capawesome Cloud automatically calls the [web build script](/docs/cloud/native-builds/guides/web-build-script/) during the build process. The script conditionally runs Trapeze only for iOS and Android platforms using the `$CI_PLATFORM` environment variable.

## Using Environment Variables[¶](#using-environment-variables "Permanent link")

You can use Capawesome Cloud's [environment variables](/docs/cloud/native-builds/environments/) to dynamically configure your native projects. This is particularly useful for overwriting configurations based on your build environment.

### Define Variables[¶](#define-variables "Permanent link")

First, define variables in your configuration file:

`[](#%5F%5Fcodelineno-3-1)vars:
[](#%5F%5Fcodelineno-3-2)  APP_ID:
[](#%5F%5Fcodelineno-3-3)  APP_NAME:
[](#%5F%5Fcodelineno-3-4)
[](#%5F%5Fcodelineno-3-5)platforms:
[](#%5F%5Fcodelineno-3-6)  android:
[](#%5F%5Fcodelineno-3-7)    packageName: $APP_ID
[](#%5F%5Fcodelineno-3-8)    appName: $APP_NAME
[](#%5F%5Fcodelineno-3-9)  ios:
[](#%5F%5Fcodelineno-3-10)    bundleId: $APP_ID
[](#%5F%5Fcodelineno-3-11)    displayName: $APP_NAME
`

### Set Variable Values[¶](#set-variable-values "Permanent link")

Then, set the variable values in your Capawesome Cloud environment:

1. Navigate to the [Environments](https://console.cloud.capawesome.io/apps/%5F/environments) page
2. Select your environment or create a new one
3. Add variables with their values:
4. `APP_ID`: `com.example.myapp`
5. `APP_NAME`: `My App`

You can create multiple environments with different values (e.g., development, staging, production) and select the appropriate environment when triggering a build.

Default values 

You can provide default values for variables that will be used if no environment variable is set:

`[](#%5F%5Fcodelineno-4-1)vars:
[](#%5F%5Fcodelineno-4-2)  APP_ID:
[](#%5F%5Fcodelineno-4-3)    default: com.example.default
[](#%5F%5Fcodelineno-4-4)  APP_NAME:
[](#%5F%5Fcodelineno-4-5)    default: Default App Name
`

May 7, 2026 

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