how to prevent withers from breaking blocks?

[ibryce]

so, on my server, i need to find a way to prevent withers from breaking blocks.

i tried using this:

on break:
 if event-entity is wither:
  cancel event

but the event only detects when a player breaks a block, i guess.

also please don't tell me to turn off the mobgriefing gamerule, it prevents villager breeding and some other important things so i'm just making it myself.

any help is appreciated ;p

 

[acai]

You can't use event-entity outside an event involving a defined entity.
The only event-(whatever) things you can use in "on break" are event-block.