Unity

using UnityEngine;
using RGN.Modules.Currency;
using UnityEngine.Purchasing;

public class CurrenciesExamples : MonoBehaviour
{
    public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs purchaseEvent)
    {
        bool validPurchase = true; // Presume valid for platforms with no R.V.

        if (validPurchase)
        {
            Debug.Log($"Product {purchaseEvent.purchasedProduct.definition.id} Purchased");
            string transactionId = purchaseEvent.purchasedProduct.transactionID;
            string receipt = purchaseEvent.purchasedProduct.receipt;
            
            PurchaseRGNCoinAsync(transactionId, receipt);
        }
        else
        {
            Debug.LogError($"Something happened when trying to purchase product {purchaseEvent.purchasedProduct.definition.id}");
        }

        return PurchaseProcessingResult.Complete;
    }

    public async void PurchaseRGNCoinAsync(string transactionId, string receipt)
    {
        string rgnProductId = "4a13bcd3-ff64-43a4-8c13-e978d968f68c"; // 10 rgn-coin
        await CurrencyModule.I.PurchaseRGNCoinAsync(rgnProductId, transactionId, receipt);
    }
}

using System.Collections.Generic;
using UnityEngine;
using RGN.Modules.Currency;

public class CurrenciesExamples : MonoBehaviour
{
    public async void GetRgnCoinCurrenciesAsync()
    {
        List<Currency> currencies = await CurrencyModule.I.GetUserCurrenciesAsync();
        Currency readyCurrency = currencies.Find(x => x.name.Equals("rgn-coin"));
        Debug.Log($"User has {readyCurrency.quantity} rgn-coin");
    }
}

using System.Collections.Generic;
using UnityEngine;
using RGN.Modules.Currency;

public class CurrenciesExamples : MonoBehaviour
{
    public async void AddSoftCurrenciesAsync()
    {
        Currency goldCurrency = new Currency
        {
            name = "gold",
            quantity = 10
        };
        List<Currency> currenciesToAdd = new List<Currency> { goldCurrency };
        await CurrencyModule.I.AddUserCurrenciesAsync(currenciesToAdd);
    }
}

using System.Collections.Generic;
using UnityEngine;
using RGN.Modules.Currency;

public class CurrenciesExamples : MonoBehaviour
{
    public async void GetSoftCurrenciesAsync()
    {
        List<Currency> currencies = await CurrencyModule.I.GetUserCurrenciesAsync();
        Currency goldCurrency = currencies.Find(x => x.name.Equals("gold"));
        Debug.Log($"User has {goldCurrency.quantity} gold");
    }
}