Updating a managed metadata column of a document set in Power Automate based on a managed metadata column value from a list item

If you want to create on a uniformed way document sets based on a state in a Microsoft List, you can now use the power automate sharepoint action "Create a new document set"

Earlier, I used "Get item" in order to obtain all dynamic data fields of a selected item. In that list is a "Brand" column which is configured as a managed metadata column linked to a tenant level term store term set. That way I can use the following dynamic data

When I use the action "Create a new document" set, i get the metadata fields of the document set. For every managed metadata field, i see the internal name of the field followed by "Value". So for the managed metadata field "Brand", i see in the power automate action "Brand Value" with a dropdown feature in which i see the terms of the connected term set. So far, so good.

Next, I take the dynamic data value from the get items action e.g. "Brand Value" and put it in the document set "Brand Value" field.

Testing it, gave in raw input the Dynamic value formatted als Label|termguid.

Nevertheless, in real result the Brand managed metadata field stayed blank.

Next, I was thinking, perhaps I must first create the document set and a little later go updating the properties. I did the same in the update action, and I get the error "Action 'Update_file_properties' failed: The data returned from the tagging UI was not formatted correctly"

Next I created a Compose action to construct something I found on the net

But even that, did not work.

What is wrong? How can I realize bringing over the content of a managed metadata field in a list to the same named and configured managed metadata field in a library in a document set.

Who helps me?