question

Hello, I have started adding playfab to my exsisiting game only to realize that I have been reading the v1 economy documentation. How can I buy/sell items like this but for v2 economy? this is my ItemToBuy.cs class

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using PlayFab;
using PlayFab.ClientModels;
public class ItemToBuy : MonoBehaviour
{
    public int glimmersPrice;
    public string itemName;
    public void BuyItem() {
        var request = new SubtractUserVirtualCurrencyRequest {
            VirtualCurrency = "GL",
            Amount = glimmersPrice
        };
        PlayFabClientAPI.SubtractUserVirtualCurrency(request, OnSubtractGlimmersSuccess, OnError);
    }
    void OnSubtractGlimmersSuccess(ModifyUserVirtualCurrencyResult result) {
        Debug.Log("Bought item! " + itemName);
        UserProfile.instance.GetVirtualCurrencies();
        //Grant items to user here
    }
// Other
    void OnError(PlayFabError error) {
        Debug.Log("Error: " + error.ErrorMessage);
    }
}