How to add a list of related Things from A to B

[abstractus]

I am stuck with the terminology of Bubble – I am sure that what I want to achieve is pretty simple but I just cannot find the way to “pronounce” it with the options…

I have a DT Institution that has a field List of Locations, while Location is a DT too. Hence an Institution can be linked to multiple Locations.

Now I want to create a Workflow to replace an Institution by another one (e.g. a duplicate entry), so all the connected Locations to this Institutions should be connected to another Institution, which is selected in the SearchBox.

So I have a “Make changes to a Thing” to “copy” the list of Locations from the current Institution to the one selected in the SearchBox. But how do I get the function which I would call “Add … each item”? I see First Item, Last Item etc., “Each Item” never comes as such but only with Each Item’s Field 1, Each Item’s Field 2…

What is the solution here to add all the Locations from one Institution to another Institution?

Thank you for any hint!

[senecadatabase]

You’re using ‘add’ and that only adds one item to a list.

You need to use the :plus list

[abstractus]

gosh, of course, yes! Thank you @senecadatabase for guiding me to the right tree!