Inserting Customer's Financial Dimensions through X++ code

The Below code is used for Inserting Financial Dimensions for a particular Customer through code.

static void BRR_Finance(Args _args)
{
  CustTable custTable;
  Struct struct = new Struct();
  container ledgerDimension;
  DimensionDefault DimensionDefault;
  ;
  //set the values
  struct.add("CostCenter", "OU_4740");
  struct.add("BusinessUnit","00000005");
  struct.add("Department","OU_4771");  
  struct.add("ExpensePurpose","Training");
  ledgerDimension += struct.fields();
  ledgerDimension += struct.fieldName(1);
  ledgerDimension += struct.valueIndex(1);
  ledgerDimension += struct.fieldName(2);
  ledgerDimension += struct.valueIndex(2);
  ledgerDimension += struct.fieldName(3);
  ledgerDimension += struct.valueIndex(3);
  ledgerDimension += struct.fieldName(4);
  ledgerDimension += struct.valueIndex(4);
   ttsBegin;
  DimensionDefault = AxdDimensionUtil::getDimensionAttributeValueSetId(ledgerDimension);
    //Select the Customer
  custTable = CustTable::find("2003",true);
  custTable.DefaultDimension = DimensionDefault;
  custTable.update();
  ttsCommit;
}