Solved (NMS) Change damage of mob

Hi, I currently have this code:

Code:java

public class CustomZombie extends net.minecraft.server.v1_5_R3.EntityZombie {
 
    public CustomZombie(World world) {
        super(world);
        this.bw = 2F;
        this.maxHealth = 20;
        this.health = 20;
    }
}

How would I let that CustomZombie do more damage, what variable would I use?