While the name of this action is fairly descriptive, it may not be clear
as to when you would use it. This action sets the contents of an attribute
to either text you provide or the contents of another attribute. The power
of setting it to text is that you can use Lava merge fields. This allows
you to string together one or more attributes using Lava’s powerful
formatting functions.
Setting an attribute to the contents of another attribute might seem a
little redundant. However, there are times that you might expect an
attribute value to change and you want to keep a copy of its previous
value.
When using this action to set a Workflow attribute of type Person via the Text Value,
you must return the GUID of the PersonAlias record, not the GUID of a Person record.