using Uniconta.DataModel;
using Uniconta.API.System;

var crudApi = new CrudAPI(baseApi);
var numberSeries = await crudApi.Query<Uniconta.DataModel.NumberSerie>().ToList();
var serieName = numberSeries.First().KeyStr;

                  
var numberSerieAPI = new NumberSerieAPI(baseApi);
var numberSerie = ClientHelper.GetRefClient<NumberSerieClient>(this.api.CompanyId, typeof(NumberSerie), "Serie");

var number = numberSerieAPI.GetNewNumber("Serie");
var fullNumber numberSerie.Prefix + numberSerieAPI.GetNewNumber("Serie");

var number = numberSerieAPI.ViewNextNumber("Serie");
numberSerieAPI.SetNumber("Serie", 100);
numberSerieAPI.CancelNumber("Serie", 100);