My script for Instantiating prefabs after random times is not working. Help!

Unity Engine
1

Hello, Unity forums. I am having bit of a trouble trying to instantiate a prefab into the scene after a certain time interval.
My script is as follows:

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

public class RainAppear : MonoBehaviour {

//public float waitForRain;
public Transform rainPrefab;
float waitTime;

void Awake()
{
waitTime = Random.Range(0.0f, 4.0f);
}

IEnumerator showRain()
{
yield return new WaitForSeconds(waitTime);
Instantiate(rainPrefab, new Vector2 (0f,Random.Range(0.0f, 3.5f)) , Quaternion.identity);

}

void Start()
{
StartCoroutine(showRain());
}

}

What am I doing wrong?
I am a newbie to Unity and C#, so some help would be really appreciated, thank you.

2

Would help if you also said what the actual problem is.

Is the problem that the script only creates one instance? If so, then change your coroutine to have a loop. Currently your coroutine waits for a while, instantiates the prefab once and then stops.

IEnumerator showRain()
{
    while (true)
    {
        yield return new WaitForSeconds(Random.Range(0f, 4f));
        Instantiate(rainPrefab, new Vector2(0f, Random.Range(0f, 3.5f)), Quaternion.identity);
    }
}