When I map ID to column I can't change key. about dommel HOT 4 CLOSED

public class EntitaMap : DommelEntityMap<EntitaEntity>
    {
        public EntitaMap()
        {
            ToTable("tppEntita");
            Map(u => u.Id).ToColumn("IDEntita").IsKey().IsIdentity();
            Map(u => u.Descrizione).ToColumn("DSEntita");
            Map(u => u.IdOwner).ToColumn("IDOwner");
        }
    }

 using (var uow = UnitOfWorkFactory.GetUnitOfWork())
            {
                var entita1 = uow.Entita.Repository.Get(e => e.Id == 1).First();
                entita1.Descrizione = "TEST";

                uow.Entita.Repository.Update(entita1);

            }

public void Update(TEntity entity)
        {
            Connection.Update(entity: entity, transaction: Transaction);
        }

2021-08-06 15:26:55,362 [4] INFO  string - Selected SQL Builder 'SqlServerSqlBuilder' for connection type 'SqlConnection'
2021-08-06 15:26:55,400 [4] INFO  string - Resolved table name '[tppEntita]' for 'Dinamo.DataAccess.DINAMO.Entita.EntitaEntity'
2021-08-06 15:26:55,402 [4] INFO  string - Selected SQL Builder 'SqlServerSqlBuilder' for connection type 'SqlConnection'
2021-08-06 15:26:57,628 [4] INFO  string - Resolved column name '[IDEntita]' for 'Int32 Id'
2021-08-06 15:26:59,002 [4] INFO  string - Select<EntitaEntity>: select * from [tppEntita] where ([IDEntita] = @p1)
2021-08-06 15:27:02,650 [4] INFO  string - Selected SQL Builder 'SqlServerSqlBuilder' for connection type 'SqlConnection'
2021-08-06 15:27:02,650 [4] INFO  string - Resolved table name '[tppEntita]' for 'Dinamo.DataAccess.DINAMO.Entita.EntitaEntity'
2021-08-06 15:27:02,657 [4] INFO  string - Resolved property 'Id' as key property for 'Dinamo.DataAccess.DINAMO.Entita.EntitaEntity'
2021-08-06 15:27:03,619 [4] INFO  string - Resolved column name '[IdInsieme]' for 'Dinamo.DataAccess.DINAMO.Insiemi IdInsieme'
2021-08-06 15:27:04,785 [4] INFO  string - Resolved column name '[DSEntita]' for 'System.String Descrizione'
2021-08-06 15:27:05,865 [4] INFO  string - Resolved column name '[Annullato]' for 'Boolean Annullato'
2021-08-06 15:27:06,662 [4] INFO  string - Resolved column name '[IDOwner]' for 'Int32 IdOwner'
2021-08-06 15:27:07,517 [4] INFO  string - Resolved column name '[IDEntita]' for 'Int32 Id'
2021-08-06 15:27:14,175 [4] INFO  string - Update<EntitaEntity>: update [tppEntita] set [IdInsieme] = @IdInsieme, [DSEntita] = @Descrizione, [Annullato] = @Annullato, [IDOwner] = @IdOwner where [IDEntita] = @Id