Как определить текущее активное окно в Apple MacOS?

Я нашел решение. Изменение "mySort" соответственно:

set sort1 to "Date Edited"
set sort2 to "Date Created"
set sort3 to "Title"

set mySort to sort1

tell application "System Events"
    tell application process "Notes"
        set frontmost to true
        keystroke "," using command down
        delay 1
        tell window "Preferences"
            #click static text "Sort notes by:" of group 1
            #set winstuff to entire contents of every group
            delay 0.5
            click pop up button 3 of group 1 of window "Preferences" of application process "Notes" of application "System Events"
            delay 0.1
            click menu item mySort of menu 1 of pop up button 3 of group 1 of window "Preferences" of application process "Notes" of application "System Events"
            delay 0.1

            keystroke "w" using command down
        end tell
    end tell
end tell