ClientID  = "2128753";
    APIKey    = "7cc90d26-33e4-499b...";
    ProductID = "1235184552";

    Stocks = New Structure;
    Stocks.Insert("offer_id"    , "143210610");
    Stocks.Insert("product_id"  , ProductID);
    Stocks.Insert("stock"       , 20);
    Stocks.Insert("warehouse_id", 1);

    Result = OPI_Ozon.UpdateProductsStocks(ClientID, APIKey, Stocks);