The name 'LayerTohit' does not exist in the current context

public class bombscript : MonoBehaviour
{
public float fieldofImpact;
public float force;

public LayerMask LayerToHit;

// Start is called before the first frame update
void Start()
{

}

// Update is called once per frame
void Update()
{
    if (Input.GetKeyDown(KeyCode.Space))
    {
        explode();
    }
}

void explode()
{
    Collider2D[] objects = Physics2D.OverlapCircleAll(transform.position,fieldofImpact,LayerTohit);

    foreach (Collider2D obj in objects)
    {
        Vector2 direction = obj.transform.position - transform.position;

        obj.GetComponent<Rigidbody2D>().AddForce(direction * force);
    }
}

void OnDrawGizmosSelected()
{
    Gizmos.color = Color.red;
    Gizmos.DrawWireSphere(transform.position,fieldofImpact);
}

}

@keenni
You spelled it wrong.
The h should be uppercase.