So I read the example under Settings and tried to make edits to the loottables of both the fish and ressource trap.
However the code I used causes the traps to stop collecting anything. ^^'
Picked them up, put them down again and restarted the single player game but nothing worked.

Edt: Okay I found it out.
Apparently the example code is wrong in that all item Blueprint paths end with "_C". You don't adress the class but the item directly so the "_C" is wrong there.