Problem with changing SSAS Tabular model by TOM

Question

Hi!

I try develop SSAS Tabular model by TOM API and C# language. Unfortunately, I have some problem with change model.

We have ready model in project, that was developed with using VS 2019 UI interface. I haven't problem with get information about model by SSAS library for .NET Core.- sources, tables, partitions. But when I try add new partition in table or add source in model, I don't see changes after code processing and there aren't errors in compilation...

Environment info:

1. SSAS 2019 + .NET Framework 4.7 in SSAS Tabular project.
2. NET Core 3.1 in administration project.
3. Microsoft.AnalysisServices.NetCore.retail.amd64 NuGet package.
4. Windows Server 2019
5. VS 2019

Maybe it depend on different . NET version in SSAS project and administration project? Or I using wrong NuGet package?

I will grateful for your help. Code below.

   class Program
    {
        static void Main(string[] args)
        {
            string connectionString = @"DataSource=someinstance1";
            string db_name = "cube";
            string tbl_name = "prod";

            Connection conn = new Connection(connectionString);

            var table = conn.get_cube_table(db_name, tbl_name);

            Console.WriteLine($"table name {table.Name}");

            TableProcessing tableProcessing = new TableProcessing(table);

            tableProcessing.get_partitions();
            tableProcessing.add_partition();
            Console.ForegroundColor = ConsoleColor.White;

        }
    }

 class TableProcessing
    {
        private Table table;
        private Partition part;
        public TableProcessing(Table table)
        {
            this.table = table;

        }

        public void get_partitions()
        {
            PartitionCollection partitions;
         
            Console.ForegroundColor = ConsoleColor.Cyan;
            int i = 1;

            try
            {
                partitions = table.Partitions;
                Console.WriteLine("\n---Table '{0}' partitions---", table.Name);
                foreach (var partition in partitions)
                {
                    Console.WriteLine("{0}. Partition:\t{1}", i, partition.Name);
                    if (partition.Name=="prod")
                    {

                        part=partition.Clone();
 
                        part.RequestRename("test");

                    }

                    i++;

                }
                Console.WriteLine("---Table '{0}' partitions---", table.Name);
            }
            catch(Exception e)
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine(e.Message);
            }

        }

        public void add_partition()
        {
           
            try
            {
                
                PartitionCollection cl = table.Partitions;

                table.Partitions.Add(part);
                Console.WriteLine("part succesful added");
            }
            catch (Exception e)
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine(e.Message);
            }

        }
    }