Add Financial dimension Lookup at Enterprise portal in Axapta

 protected void BusinessSector_LookUp(object sender, AxLookupEventArgs e)  
     {  
       //Getcurrent user to filter record based on current user   
       String usr = WindowsIdentity.GetCurrent().Name;  
       int pos = usr.IndexOf('\\');  
       usr = pos != -1 ? usr.Substring(pos + 1) : usr;  
       AxLookup lookup = (AxLookup)sender;  
       // Create the lookup data set. The respective table will be used.  
       Proxy.SysDataSetBuilder sysDataSetBuilder;  
       sysDataSetBuilder = Proxy.SysDataSetBuilder.constructLookupDataSet(AxSession.AxaptaAdapter, TableMetadata.TableNum(AxSession, "DimensionFinancialTag"));  
       // Set the generated data set as the lookup data set.  
       lookup.LookupDataSet = new DataSet(AxSession, sysDataSetBuilder.toDataSet());  
       using (Proxy.Query query = lookup.LookupDataSet.DataSetViews[0].MasterDataSource.query())  
       {  
         query.dataSourceNo(1).addRange(TableArrayFieldMetadata.FieldNum(this.AxSession, "DimensionFinancialTag", "FinancialTagCategory")).value = "5637146078";  
       }  
       // Specify the fields for the lookup.  
       lookup.Fields.Add(AxBoundFieldFactory.Create(AxSession, lookup.LookupDataSetViewMetadata.ViewFields["Description"]));  
       lookup.Fields.Add(AxBoundFieldFactory.Create(AxSession, lookup.LookupDataSetViewMetadata.ViewFields["Value"]));  
       lookup.SelectField = "Value";  
 }