Assiging indexed values to a structure field

I would like a field of my indexed structure to take on a value similarly indexed in a different vector:

struc(1:3).value=1:3

However, this gives the error "Expected one output from a curly brace or dot indexing expression, but there were 2 results."

Enclosing either the left- or the right-hand side of the assignment line in square brackets does not help.

How can I achieve this variable assignment, other than by using a for loop?