How to get reminder creation date from Apple Reminders

list_reminders.applescript

#!/usr/bin/osascript

use scripting additions

set reminders_names to {}
set creation_dates to {}
set output to ""

tell application "Reminders"
  launch
  # i'm listing not completed items only from default list (specifying concrete list for some reason returning error)
  set {reminders_names, creation_dates} to {name, creation date} of (every reminder where completed is not true) of default list 
end tell

repeat with i from 1 to number of items in reminders_names
  set output to output & (item i of reminders_names) & " -- " & (item i of creation_dates) & "\n\n"
end repeat

tell application "System Events"
  set the clipboard to output as text
end tell