Only InvokeReapeating Works?

I have this script. problem is Gameobject only spawns when I use InvokeRepeating, but i need to use Invoke, to Invoke at a set random time.

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

public class SpawnScript : MonoBehaviour {

	public float SpawnMin = 1f;
	public float SpawnMax = 2f;

	void Start() {
		Invoke ("Spawn", Random.Range(SpawnMin, SpawnMax));

	void Spawn()
		GameObject obj = ObjectPoolerScript.current.GetPooledObject ();
		if (obj == null) return;
		//sets spawn position/rotation
		obj.transform.position = transform.position;
		obj.transform.rotation = transform.rotation;

		//makes object active
		obj.SetActive (true);
		SetActiveFalseScript.stopmovement = false; 


Put your Invoke also inside Spawn as last line or use a coroutine that yields WaitForSeconds.