Having Trouble with NullRefence Excpetion OnParticleCollision

What I am trying to achine is OnParticle collision retrieve a public variable stored on the script called Tower to then subtract that from the current units health which sounds simple in theory just really not sure where I am goind wrong. Collisions and send messages are enabled on the emitter but keep getting a null reference exeception every time the ProcessHit method is called. Any ideas?

Setting the Public variable in the script Tower with the following

public int TowerDamage {get{return towerDamage;}}

The OnParticleCollision Method and Process Hit method below

private void OnParticleCollision(GameObject other)
    {
        ProcessHit(other);
    }

    void ProcessHit(GameObject other)
    {
        int damageToTake = other.GetComponent<Tower>().TowerDamage;
        Debug.Log("Damage to take = " + damageToTake);
        currentHP -= damageToTake;

        if (currentHP <= 0)
        {
            gameObject.SetActive(false);
            enemy.RewardGold();
            maxHP += difficultyRamp;
        }
    }

It seems to be complaining at the “int damageToTake = other.GetComponent().TowerDamage;” line and the debug following is never shown.

Nevermind found my issue, needed to use GetComponentInParent. silly mistake on my part