CubeSpawner.cs

using UnityEngine;

public class CubeSpawner : MonoBehaviour
{
    private void OnEnable()
    {
        int cubeCount = RemoteSettings.GetInt("cubesToSpawn");

        for (int i = 0; i < cubeCount; i++)
        {
            var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
            cube.transform.position = GetRandomPosition();
        }
    }

    private void Update()
    {
        RemoteSettings.CallOnUpdate();
    }

    private Vector3 GetRandomPosition()
    {
        return new Vector3(
            Random.Range(-5, 5),
            Random.Range(-5, 5),
            Random.Range(-5, 5));
    }
}