[1.7.10]Making mob with spawning ability PLS help

[prometheanrazer]

hello everyone, I am currently workin on an entity that spawns approximately 3 mobs each time it's hurt, however my code makes it spawn them non-stop as long as it's health is lower than the max health.

I know why this happens I just don't know how to make it do as I stated before; spawn 3 mobs each time it's hurt.

 

this is my current code for the spawning feature:

[embed=425,349]

public void onEntityUpdate() {

        super.onEntityUpdate();

        int i = (int) posX;

        int j = (int) posY;

        int k = (int) posZ;

        int h = (int) this.getHealth();

        int m = (int) this.getMaxHealth();

        if (true) {

            Entity sentity = EntityList.createEntityByID(54, worldObj);

            if(h < m) {

                sentity.setLocationAndAngles(i, j, k, worldObj.rand.nextFloat() * 360F, 0.0F);

                worldObj.spawnEntityInWorld(sentity);

                ((EntityLiving) sentity).playLivingSound();

            }

            return;

        }

[/embed]

I would appreciate your help.

-Prometheanrazer.

[Raycoms]

how about spawning them in:

    public boolean attackEntityFrom(@NotNull final DamageSource damageSource, final float damage)