Character speech gesture custom action

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

namespace AC
{
    public class ActionPlayCharacterGesture : Action
    {
        public int AssociatedSpeechID;
        public string Clip;
        public int MecanimLayer;
        public float Delay;

        public override ActionCategory Category { get { return ActionCategory.Character; } }
        public override string Title { get { return "Play Gesture"; } }
        public override string Description { get { return "Plays gesture animation."; } }

        override public float Run()
        {
            CoroutineController.Start(Gesture(AssociatedSpeechID, Clip, MecanimLayer, Delay));
            return 0;
        }

        IEnumerator Gesture(int associatedSpeechID, string clip, int mecanimLayer, float delay)
        {
            yield return new WaitForSeconds(delay);

            Speech speech = KickStarter.dialog.GetLiveSpeechWithID(associatedSpeechID);
            if (speech is null) yield break;

            speech.speaker.GetAnimator().Play(clip, mecanimLayer);
        }

        #if UNITY_EDITOR
        override public void ShowGUI(List<ActionParameter> parameters)
        {
            AssociatedSpeechID = EditorGUILayout.IntField("Associated Speech ID:", AssociatedSpeechID);
            Clip = EditorGUILayout.TextField("Clip:", Clip);
            MecanimLayer = EditorGUILayout.IntField("Mecanim Layer:", MecanimLayer);
            Delay = EditorGUILayout.FloatField("Delay:", Delay);
        }
        #endif
    }
}