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Create Mutable Attribute - Entity Creation


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I am using forge version 1.16.1-32.0.63 and I wanted to create my own custom entity. I did not know how to set the mutable attributes, so I looked it up, but every search directed me to roughly the same code:


package com.gamingtiger.gttaa.entities;

import com.sun.org.apache.xml.internal.utils.MutableAttrListImpl;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityType;
import net.minecraft.entity.MobEntity;
import net.minecraft.entity.ai.attributes.Attribute;
import net.minecraft.entity.ai.attributes.AttributeModifierMap;
import net.minecraft.nbt.CompoundNBT;
import net.minecraft.network.IPacket;
import net.minecraft.world.World;

public class SuperZombieEntity extends Entity {
    public SuperZombieEntity(EntityType<?> entityTypeIn, World worldIn) {
        super(entityTypeIn, worldIn);

    public static AttributeModifierMap.MutableAttribute setCustomAttribute() {
        return MobEntity.func_233666_p_().createMutableAttribute(Attribute.MAX_HEALTH, 100.0D);

    protected void registerData() {


    protected void readAdditional(CompoundNBT compound) {


    protected void writeAdditional(CompoundNBT compound) {


    public IPacket<?> createSpawnPacket() {
        return null;


The problem is that the ".createMutableAttribute" does not exist and I don't know how to solve this.


I tested this with a passive mob and a mobentity.

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