Orient Particles in Unity3d

OrientParticles.cs

using UnityEngine;
using System;
using System.Collections.Generic;
using System.Collections;

/**
 * A simple copy of example code from the manual, modified to orient particles
 * based on the center of the system.
 */

[ExecuteInEditMode]
public class OrientParticles : MonoBehaviour
{

  ParticleSystem m_System;
  ParticleSystem.Particle[] m_Particles;
  public float angleOffset = 0.0f;

  private void LateUpdate()
  {
      InitializeIfNeeded();

      // GetParticles is allocation free because we reuse the m_Particles buffer between updates
      int numParticlesAlive = m_System.GetParticles(m_Particles);

      // Change only the particles that are alive
      for (int i = 0; i < numParticlesAlive; i++)
      {
        // use atan2 to calc angle based on position, then convert to degrees.
        float angle = Mathf.Atan2(m_Particles[i].position.x, m_Particles[i].position.y) * Mathf.Rad2Deg;
        // add the offset (in case the artwork is rotated, etc.)
        m_Particles[i].rotation = angle + angleOffset;
      }

      // Apply the particle changes to the particle system
      m_System.SetParticles(m_Particles, numParticlesAlive);
  }

  void InitializeIfNeeded()
  {
      if (m_System == null)
          m_System = GetComponent<ParticleSystem>();

      if (m_Particles == null || m_Particles.Length < m_System.maxParticles)
          m_Particles = new ParticleSystem.Particle[m_System.maxParticles]; 
  }

}

I'm getting an error (currently Unity 2018.1) for the "m_System.maxParticles" saying:
"'ParticleSystem.maxParticles' is obsolete: 'maxParticles property is deprecated. Use main.maxParticles instead'."

Any advice? Thank you!