The Add item to list action does not allow adding multiple items at once. It only supports adding one item.
What you can do instead is use Set variable to create a temporary list with all of your values like this:
And then use Merge lists to merge your original list with this temporary list. What this will do is add all of the values from the second list to the end of the first list. You can then make it store the output in the same original list, effectively overwriting it with the new merged list.
While this requires two actions instead of one, it is still much more efficient than adding all of those values one by one.
-------------------------------------------------------------------------
If I have answered your question, please mark it as the preferred solution.
If you like my response, please give it a Thumbs Up.
If you are interested in Power Automate, you might want to follow me on LinkedIn at https://www.linkedin.com/in/agnius-bartninkas/
