Issue with entityHurt.subscribe: Cannot read property 'subscribe' of undefined

[tame beacon]

I encountered an error while trying to use the entityHurt before-event.
[Error Message] TypeError: Cannot read property 'subscribe' of undefined at <anonymous>

world.beforeEvents.entityHurt.subscribe((event) => {
    const attacker = event.damageSource.damagingEntity;
    const victim = event.hurtEntity;

    if (attacker instanceof Player && victim instanceof Player) {
        // Simple guild check logic
        const attackerGuild = attacker.getDynamicProperty("guild_name");
        const victimGuild = victim.getDynamicProperty("guild_name");

        if (attackerGuild && victimGuild && attackerGuild === victimGuild) {
            event.cancel = true;
        }
    }
});

[woeful lake]

Are you in preview with beta apis turned on?

[tame beacon]

Yes, I have the 'Beta APIs' toggle turned on in my world experiments, and I am using the Official Stable Version (1.21.131), not the Preview version.

[woeful lake]

It was introduced in Preview 26.0

Hence not available for 1.21.131

[tame beacon]

Got it, thanks for the info! Since I can't use beforeEvents yet, is there any other way to cancel or mitigate damage between players in 1.21.131

[woeful lake]

Edit player.json