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

public class SpawnManagerX : MonoBehaviour
{
public GameObject[] ballPrefabs;

private float spawnLimitXLeft = -40;
private float spawnLimitXRight = 5;
private float spawnPosY = 30;

private float startDelay = 1.0f;
private float spawnInterval = 4;

// Start is called before the first frame update
void Start()
{
    InvokeRepeating("SpawnRandomBall", startDelay, spawnInterval);
}

// Spawn random ball at random x position at top of play area
void SpawnRandomBall ()
{
    // Generate random ball index and random spawn position
    Vector3 spawnPos = new Vector3(Random.Range(spawnLimitXLeft, spawnLimitXRight), spawnPosY, 0);

    // instantiate ball at random spawn location

    int ballIndex = Random.Range(0, ballPrefabs.Length);
    Instantiate(ballPrefabs[ballIndex], spawnPos, ballPrefabs[ballIndex].transform.rotation);
}

}
`

I need to make an appearance for example from 3 to 5 seconds, the Random.Range method does not work for some reason