How do you configure the entity reach of a custom weapon? Asking for 1.21 Minecraft parchment

@Nood_dev Could you send a screenshot of your weapon code? Here is the one I made (for a dagger):

The specific UUID does not matter, just that it is the same every time, which is why UUID#randomUUID does not work

public class DaggerItem extends TieredItem implements Vanishable {
  protected static final double REACH_MODIFIER = -1.5D;
  protected final Multimap<Attribute, AttributeModifier> defaultModifiers;
  protected final UUID BASE_ATTACK_REACH_UUID = UUID.fromString("6fe75b5c-9d1b-4e83-9eea-a1d5a94e8dd5")
  
  public DaggerItem(Tier pTier, int pAttackDamageModifier, float pAttackSpeedModifier, Properties pProperties) {
    super(pTier, pAttackDamageModifier, pAttackSpeedModifier, pProperties);
    this.attackDamage = (float) pAttackDamageModifier + pTier.getAttackDamageBonus();
    ImmutableMultimap.Builder<Attribute, AttributeModifier> builder = ImmutableMultimap.builder();
    builder.put(Attributes.ATTACK_DAMAGE, new AttributeModifier(BASE_ATTACK_DAMAGE_UUID, "Weapon modifier", this.attackDamage, AttributeModifier.Operation.ADDITION));
    builder.put(Attributes.ATTACK_SPEED, new AttributeModifier(BASE_ATTACK_SPEED_UUID, "Weapon modifier", pAttackSpeedModifier, AttributeModifier.Operation.ADDITION));
    // THE ONE YOU WANT:
    builder.put(ForgeMod.ENTITY_REACH.get(), new AttributeModifier(BASE_ATTACK_REACH_UUID, "Weapon modifier", REACH_MODIFIER, AttributeModifier.Operation.ADDITION));
    this.defaultModifiers = builder.build();
  }
  
  @Override
  public Multimap<Attribute, AttributeModifier> getDefaultAttributeModifiers(EquipmentSlot pEquipmentSlot) {
    return pEquipmentSlot == EquipmentSlot.MAINHAND ? this.defaultModifiers : super.getDefaultAttributeModifiers(pEquipmentSlot);
  }
}

Edited February 11Feb 11 by Unknown_303