Problem iterate in function - Now with Flow and Screenshots

With the Google Contact Node ‘GET All’ I get all existing contacts. In this case 4 pieces. Now I want to convert the JSON returned for each contact into a text using a function. JSON.stringify(). So far it works. However, the function is not iterated. The same text generated by the function is in each output item.
How do I have to adapt the function so that each item also contains the corresponding JSON.stringify() generated?

The problem is that you always reference the same item in the loop. If you replace $node["Google Contacts"].json with item.json it will work fine.

Here the fixed workflow:

Thank you Jan
I’m learning every day and it’s getting more and more interesting

You are welcome. That is great to hear!

Have fun!