I made this script instance but I get this error: Assets / Prefab / PrefabSpawner.cs (15,12): error CS0135: `PrefabPosL 'Conflicts with a declaration in a child block

using UnityEngine; using System.Collections;

public class PrefabSpawner : MonoBehaviour {

 public GameObject Prefab;

 private bool PrefabPosL = true;

 private bool PrefabPosR = false;

 // Use this for initialization
 void Start ()
 {
     if(PrefabPosL = PrefabPosR)
         {
         Vector3 PrefabPosL = new Vector3(Random.Range(-2, 2), transform.position.y, transform.position.z);

         Instantiate(Prefab, PrefabPosL, transform.rotation); 
         }
     else
         {
         Vector3 PrefabPosR = new Vector3(Random.Range(2, 2), transform.position.y, transform.position.z);

         Instantiate(Prefab, PrefabPosR, transform.rotation);
         }
 }
 
 // Update is called once per frame
 void Update ()
 {
 
 }