chords - single note from coll

Can anyone help me out here ?

A list which represents a chord can be split with a message box $1,$2,$3 so the notes are send after each and thus represent a chord (when feeding into makenote )

How does one the use a single note so that the $2,$3 of the message are not being used
Reason for asking is that in the coll.there are chords and single notes , all going out the same output .

The chords are split using the method described above , but I obviously don't wan't that for the single note ( $2,$3 holds the previous values )