Formatting messages to use in "forward"

A max user had the following problem:

I have a number and a list.
Lets say the number is 4 and the list is 1 2 3 4
I want to format this for use with forward so I need it to read:
send actor4, 1 2 3 4

The example provided shows just that: how to format the number with a sprintf object in order to tell forward which receive object to connect to.