Please Help me!

Hey!
You can use `OnLootSpawn` hook and add your item to the container :)

and can be in more details, I use this hook but do not know what next ) Here is an example of this plugin




using Oxide.Core.Libraries.Covalence;
using UnityEngine;
using Random = UnityEngine.Random;

namespace Oxide.Plugins
{
    [Info("CaseSpawn", "Dadya Stepa", "1")]
    public class MegaCaseSpawned : RustPlugin
    {
        public float chance = 0.1f;

        private void OnEntityDeath(BaseNetworkable entity, HitInfo info)
        {
            BasePlayer player = info.InitiatorPlayer?.ToPlayer();
            if (player == null || entity == null || info == null) return;


            if (31 - player.inventory.containerMain.itemList.Count - player.inventory.containerBelt.itemList.Count < 1)
            {

                PrintToChat(player, "ты такую вещь потерял! Следи за инвентарём,что бы в следующий раз тебе повезло!");



            }
            if (entity.name.Contains("barrel") && (Random.Range(1, 1) <= chance))
            {

                Chinook(player);
                if (player != null)
                    PrintToChat(player, "ВОУ, да тебе повезло, загляни в инвентарь!");

            }
        }

        private void OnEntityBuilt(Planner planner, GameObject gameobject)
        {

            var entity = gameobject.ToBaseEntity();
            if (entity == null) return;
            if (entity.skinID != skin) return;
            var player = planner.GetOwnerPlayer();
            if (player == null) return;
            var pos = entity.transform.position;

            entity.Kill();

            var Chinook = GameManager.server.CreateEntity("assets/prefabs/deployable/chinooklockedcrate/codelockedhackablecrate.prefab", pos, new Quaternion(), true);
            Chinook.OwnerID = player.userID;
            Chinook.Spawn();


        }

        void OnCrateHack(HackableLockedCrate crate)
        {
            crate.hackSeconds = 600f;
        }


        [ConsoleCommand("chin")]
        private void Addchin(ConsoleSystem.Arg args)
        {


            if (!args.IsAdmin)
            {
                return;
            }
            var player = BasePlayer.Find(args.Args[0]);


            Chinook(player);
        }


        private void Chinook(BasePlayer player)
        {
            var boxlock = ItemManager.CreateByName("box.wooden", 1, skin);
            boxlock.name = "Мега ящик";
            boxlock.MoveToContainer(player.inventory.containerMain);


        }
        private const ulong skin = 918834850;


    }
}

and can be in more details, I use this hook but do not know what next ) Here is an example of this plugin




using Oxide.Core.Libraries.Covalence;
using UnityEngine;
using Random = UnityEngine.Random;

namespace Oxide.Plugins
{
    [Info("CaseSpawn", "Dadya Stepa", "1")]
    public class MegaCaseSpawned : RustPlugin
    {
        public float chance = 0.1f;

        private void OnEntityDeath(BaseNetworkable entity, HitInfo info)
        {
            BasePlayer player = info.InitiatorPlayer?.ToPlayer();
            if (player == null || entity == null || info == null) return;


            if (31 - player.inventory.containerMain.itemList.Count - player.inventory.containerBelt.itemList.Count < 1)
            {

                PrintToChat(player, "ты такую вещь потерял! Следи за инвентарём,что бы в следующий раз тебе повезло!");



            }
            if (entity.name.Contains("barrel") && (Random.Range(1, 1) <= chance))
            {

                Chinook(player);
                if (player != null)
                    PrintToChat(player, "ВОУ, да тебе повезло, загляни в инвентарь!");

            }
        }

        private void OnEntityBuilt(Planner planner, GameObject gameobject)
        {

            var entity = gameobject.ToBaseEntity();
            if (entity == null) return;
            if (entity.skinID != skin) return;
            var player = planner.GetOwnerPlayer();
            if (player == null) return;
            var pos = entity.transform.position;

            entity.Kill();

            var Chinook = GameManager.server.CreateEntity("assets/prefabs/deployable/chinooklockedcrate/codelockedhackablecrate.prefab", pos, new Quaternion(), true);
            Chinook.OwnerID = player.userID;
            Chinook.Spawn();


        }

        void OnCrateHack(HackableLockedCrate crate)
        {
            crate.hackSeconds = 600f;
        }


        [ConsoleCommand("chin")]
        private void Addchin(ConsoleSystem.Arg args)
        {


            if (!args.IsAdmin)
            {
                return;
            }
            var player = BasePlayer.Find(args.Args[0]);


            Chinook(player);
        }


        private void Chinook(BasePlayer player)
        {
            var boxlock = ItemManager.CreateByName("box.wooden", 1, skin);
            boxlock.name = "Мега ящик";
            boxlock.MoveToContainer(player.inventory.containerMain);


        }
        private const ulong skin = 918834850;


    }
}