1. Log in to the Google Cloud Console.
2. Create a new project or pick one you already have.
3. Head over to the Cloud Functions section.
4. Click "Create Function".
5. Give your function a name and tweak settings like memory and timeout to fit your needs.
6. In the "Trigger" section, set up the HTTP trigger. Make sure to note down the HTTP URL; you'll need it for Adalo.
7. Write your function code. Here's a simple example:

const { google } = require('googleapis');
exports.yourFunctionName = (req, res) => {
    res.set('Access-Control-Allow-Origin', '*');
    res.set('Access-Control-Allow-Methods', 'GET, POST');
    // Add your function logic here
    res.status(200).send('Hello from Google Cloud Function!');
};

1. Deploy your function.

1. Make sure you've set CORS headers in your function. Check the example above:
   ```javascript
   res.set('Access-Control-Allow-Origin', '*');
   res.set('Access-Control-Allow-Methods', 'GET, POST');
   ```
2. Redeploy the function after confirming the CORS headers are correctly set.

1. Log in to your Adalo account.
2. Open an existing app or start a new one.
3. Go to "Database" if you need to create or modify collections (tables) that will interact with the Cloud Function.

1. On the left-panel toolbar, click "Add Component" and choose "Button" or any other interactive component.
2. Place the button on the screen where you want to trigger the Google Cloud Function.

1. Click on the button you just added.
2. Go to the "Actions" tab.
3. Click "Add Action" and select "Custom Action".
4. Click "New Custom Action".
5. Give your custom action a name.
6. Choose "External API" as the action type and click "Create".
7. Set up the custom action like this:

• Method: GET or POST (depends on how you set up your Cloud Function).
• URL: The HTTP URL of your Google Cloud Function.
• Headers: Add content-type application/json or any other required headers.
• Body: Define the body if your function needs it.

1. Save the custom action setup.

1. Publish or preview your Adalo app.
2. Go to the screen with the button you set up.
3. Click the button and check if the Google Cloud Function is triggered and responds as expected.

This detailed step-by-step guide provides a specific and manageable workflow to integrate Google Cloud Functions with Adalo.