NPCs killing animals

can someone help pls with this ..
i don't want the murderer and scarecrow to hurt animals
i did this but its not working :

flag
"npcs cannot hurt animals",

entity group:
{
"name": "animals",
"members": "Bear,Boar,Chicken,Horse,Stag,Wolf",
"exclusions": ""
},

and npcs group is :

{
"name": "npcs",
"members": "NPCPlayerApex, BradleyAPC,NPCMurderer, murderer, NPCScientist, scientist, scarecrow",
"exclusions": ""
},

but murderers still killing animals
anything wrong with this ?


any help ?