How to show app indicators on the system tray in elementary OS 6.1 and 7.1

Hello,
to install the possibility for show app indicators on the system tray in Pantheon for elementaryOS 5 is here specified
https://www.reallinuxuser.com/how-to-show-app-indicators-on-the-system-tray-in-elementary-os/
and here also for elementaryOS 6.1
https://www.blattertech.ch/2022/08/elementary-os-installieren/
Systemtray installieren
sudo add-apt-repository -y ppa:yunnxx/elementary
sudo apt update
sudo apt install -y indicator-application wingpanel-indicator-ayatana
cd /etc/xdg/autostart/
sudo nano indicator-application.desktop
In der Zeile OnyShowIn= den Text Pantheon; ergänzen
OnlyShowIn=Unity;GNOME;Pantheon;

But this don't work for me in elementaryOS 6.1 or 7.1

In elementaryOS 6.1 it works with:
$ cat /etc/xdg/autostart/indicator-application.desktop | grep Show
#OnlyShowIn=Unity;GNOME;Pantheon;
NotShowIn=XFCE;
Perhaps the "Pantheon" is unknown for the system in the "OnlyShowIn=...".

I am searching for a solution for elementaryOS 7.1 also.
The PPA "deb http://ppa.launchpad.net/yunnxx/elementary/ubuntu jammy main" is empty.

Can anyone help me?

with regards
Ch. Hanisch