how to spawn in det. x positiion

Unity Engine
1

this is my code

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

public class Coin : MonoBehaviour {

    public int columnPoolSize = 5;
    public GameObject columnPrefab;

    public float columnMin = -2.9f;
    public float columnMax = 1.4f;
    private float spawnXPosition = 15f;

    private GameObject[] columns;
    private Vector2 objectPoolPosition = new Vector2(-14, 0);

    private float timeSinceLastSpawned;
    public float spawRate;

    private int currentColumn;

    // Use this for initialization
    void Start()
    {
        columns = new GameObject[columnPoolSize];
        for (int i = 0; i < columnPoolSize; i++)
        {
            columns[i] = Instantiate(columnPrefab, objectPoolPosition, Quaternion.identity);
        }

        SpawnColumn();
    }

    // Update is called once per frame
    void Update()
    {
        timeSinceLastSpawned += Time.deltaTime;
        if (!GameController.instance.gameOver && timeSinceLastSpawned >= spawRate)
        {
            timeSinceLastSpawned = 0;
            SpawnColumn();
        }
    }

    void SpawnColumn()
    {
        float spawnYPosition = Random.Range(columnMin, columnMax);
        columns[currentColumn].transform.position = new Vector2(spawnXPosition, spawnYPosition);

        currentColumn++;
        if (currentColumn >= columnPoolSize)
        {
            currentColumn = 0;
        }
    }
}

[CODE]
hi i want to spawn this item between a other item (x position) but idk how i did it with y but if i do with x the item will be gone
if u dont understandme i can make a video xdd
2

Did you figure this out, because I saw you writing a post about collecting coins? (2 posts sorta)