Update list item at any site and lookup or managed metadata

Is it possible to use the action update list item at any site to update a lookup column or a managed metadata column? I’ve been trying to uptade the columns of a Document set after copying it from another folder ([url]Can I Move a Document Set and It’s Contents]), but couldn’t make it work.
One of the errors:

[quote]An unexpected ‘PrimitiveValue’ node was found when reading from the JSON reader. A ‘StartObject’ node was expected.
[/quote]

Nevermind.
I used the Get items from list action, than did some string processing to get the right formatting, and than used the Update list item in any site.