User cannot see all scheduled tasks via Get-ScheduledTask

Hello everyone,
i try to write a script which reads all my custom scheduled tasks and the result of them.
Running the script as Administrator i can see all my tasks in my custom folder. If i run it as user (because it have to work via icinga2 monitoring agent), i can only see the microsoft tasks.
I googled and changed some permissions on the C:WindowsSystem32Tasks and subfolder but without success.
Is there an other workaround to see my customs tasks?
Thx!