Stride SpriteSheet anim with AsyncScript

StrideAsyncScript.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Stride.Core.Mathematics;
using Stride.Input;
using Stride.Engine;
using System.Diagnostics;
using Stride.Graphics;
using Stride.Rendering.Sprites;

namespace PlatformerGame.Assets.Scripts
{
    public class SpriteAnimator : AsyncScript
    {
        public int DelayBetweenFramesMS { get; set; } = 150;

        public SpriteSheet _SpriteSheet;
        private SpriteComponent spriteComponent { get; set; }
        
        const string FLY_SPRITE_GROUP = "batFly";

        public override async Task Execute()
        {
            spriteComponent = new SpriteComponent();
            Entity.Add(spriteComponent);

            var flyStartIndex = -1;
            var flyEndIndex = -1;
            for (var i = 0; i < _SpriteSheet.Sprites.Count; i++)
            {
                if (_SpriteSheet.Sprites[i].Name == FLY_SPRITE_GROUP)
                {
                    if (flyStartIndex == -1) // Occurs single time
                    {
                        flyStartIndex = i; 
                    }

                    flyEndIndex = i;              
                }
            }
            

            for (var i = flyStartIndex; i <= flyEndIndex ; i++)
            {
                spriteComponent.SpriteProvider = new SpriteFromSheet()
                {
                    Sheet = _SpriteSheet,
                    CurrentFrame = i
                };

                if (i == flyEndIndex)
                {
                    i = 0;
                }

                await Task.Delay(DelayBetweenFramesMS);
            }

            await Script.NextFrame();
        }
    }
}