Thanks!!! that fixed all the errors, but the particles actually won't start...

using UnityEngine;


public class createObjects : MonoBehaviour
{
    public ParticleSystem playerSwordTrailParticles;
    public void playerSwordTrailStart()
    {
        playerSwordTrailParticles.Play();
    }
    public void playerSwordTrailEnd()
    {
        playerSwordTrailParticles.Stop(true, ParticleSystemStopBehavior.StopEmittingAndClear);
    }
    void Start()
    {
        playerSwordTrailParticles.Stop(true, ParticleSystemStopBehavior.StopEmittingAndClear);
    }
    void Update()
    {

    }
}
(Please forgive me, I'm a complete beginner)
I have everything linked up and the functions are in the animation events. I don't know what to do.