안녕하세요 랜덤오브젝트 생성기에서 질문있습니다.

16:04 에 prop prefabs에 저는 사이즈가 안나오는데 왜그럴까요..?

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

public class SpawnGenerator : MonoBehaviour
{
    
    public GameObject[] propPrefabs;
    private BoxCollider area;

    public int count = 100;

    private List<GameObject> props = new List<GameObject>();

    void Start()
    {
        area = GetComponent<BoxCollider>();

        for (int i = 0; i < count; i++)
        {
            Spawn();
        }

        area.enabled = false;
    }  

    private void Spawn()
    {
        int selection = Random.Range(0, propPrefabs.Length);

        GameObject selectedPrefab = propPrefabs[selection];

        Vector3 spawnPos = GetRandomPosition();

        GameObject instance = Instantiate(selectedPrefab, spawnPos, Quaternion.identity);
        props.Add(instance); 

    }

    private Vector3 GetRandomPosition()
    {
        Vector3 basePosition = transform.position;
        Vector3 size = area.size;

        float posX = basePosition.x + Random.Range(-size.x/2f, size.x/2f);

        float posY = basePosition.y + Random.Range(-size.y/2f, size.y/2f);

        float posZ = basePosition.z + Random.Range(-size.z/2f, size.z/2f);

        Vector3 spawnPos = new Vector3(posX,posY,posZ);

        return spawnPos;
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}