For everyone using 4.24 I got this reply from the dev team:
“It looks like the “Set Object” function has been removed in 4.24. That would be the reason your Widget is crashing. It is trying to compile something that doesn’t exist anymore.”
But I´m not sure on how to actually display and set the variables in the editor widget in 4.24. Anyone got an answer to this?
Edit:
@Shadow.Storm mentioned this in an earlier post here, but no further explanation was given yet: “…expose properties for editing without needing to remake editor UI. A helpful hint is to set “this” node for the Object oh these widgets, and then any public properties will show up.”