On the UiPath.System.Activities package version 22.10.x, the Add Log Fields activity has no option to change the collection, turning it useless.
i did had the similar issue with Invoke
i re open the app it worked
I think the latest System 22.10.4 package fixes the issue. I tested on Studio 2022.12, so feel free to let me know in case you had something similar on an older version of Studio (if possible, please test right away on the latest patch of any particular major version).