question

Hi, I am using this code to fetch items from my catalog and trigger Steam IAPs:

PlayFabClientAPI.StartPurchase(new StartPurchaseRequest() {
    CatalogVersion = "IAP1_0",
    Items = new List<ItemPurchaseRequest>() {
        new ItemPurchaseRequest() {
            ItemId = "BigBagOfGold",
            Quantity = 1,
            Annotation = "Purchased via in-game store"
        }
    }
}, result => {
    // Handle success
}, error => {
    // Handle error
});

With this code I am able to get items which have been previously created under Economy->Catalogs->Items. In my game, players can create and sell their items within the game. Since I don't know the names and prices they are going to use I am not able to specify in advance those items in the dashboard and them pull up their details.

So the question is, can I either get an item by ID using the code above and change the name and price fields or create a request for starting a purchase where I can pass parameters such as Name, Price, etc?

Thanks!