I’ve tried multiple times. Finally according to the method described by Atle from 19 March, 2022. I only put two pieces together at a time and later then I connected these pairs to form the whole puzzle. However, I have not received any completion message.

Btw, in Firefox developer mode I can’t format the javascript. The curly brackets for pretty print are missing here. So I use the developer mode in Google Chrome.

Even the regex search doesn’t work (neither in Firefox nor in Chrome). Here I help myself with the website regex101. There I paste the copied source text and then I find the double for loop via the regex search.

Has anyone tried to build a solution using Microsoft Power Automate Desktop?