Sync Script Button

Leo posted this script for a custom button to sync two folders.

I can not get it to work; I must be missing something.

SCRIPT
@nodeselect
@if:Set UTILITY=Sync
Set UTILITY=Off
@if:else
Set SOURCE=Left
Find SYNC NOAUTORUN FROM {filepath$} TO {filepathdest$}

That will open the Synchronize panel with the selected folder on the left as the source, and the selected folder on the right as the destination.

It won't do anything if you don't have something selected on both sides, and won't actually start the sync (due to "NOAUTORUN").

Thank you