@BjoernMikolajewski check the selectors
you can explain this in more detail
Check the unique one that keep on changing, Check the difference of 2 r 3 selectors, find the difference in them.
The one which is changing can be kept ur selector
Welcome to our UiPath Forum! 
It looks like you are trying to assign the value to a checkbox with an Assign activity and unfortunately it is not the way (the Assign activity is used to modify your process variables and not the external application UI fields).
However, you are almost there. You are already looping through UI elements using the Find Children activity. Simply replace your Assign activity with a Click activity and it should work
first thank you for the help
The aastate is changing “markierbar”–>“aktiviert, markierbar”, but how assign the “Aktiviert” to aastate?
sorry for my bad englisch
The Click activity doesnt work , because of the “indicate on screen”?
The one, which is changing can store in a variable and that should be pass inside the selectors, the place it is changing
example: ’ “+variable+” ’
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