CSV for obejtos java – eclipse (csv to bean) – returns Null

I have the following java class:

public class Persona {
private string employee_name;

                private String user_id;
private String domain;
private String email;
private String role;


@ Override
public String toString () {
return "Person [employee_name=" + employee_name + ", user_id=" + user_id + ", domain=" + domain + ", email="
                + email + ", role=" + role + "]";
}

// Gets and Sets omitted to stay smaller

}

The following CSV file:

employee_name, user_id, email domain, scroll
BurtonMStephenson, BMS0001, dtaa.com, Burton.M.Stephenson @ dtaa.com, Security
Keelie M Goodwin, KMG0002, dtaa.com, Keelie.M.Goodwin @ dtaa.com, Engineer
Dara El Craig, DOC0003, dtaa.com, Dara.O.Craig @ dtaa.com, VP

I have the class responsible for reading the CSV file and playing in opbetos of the person type:

import java.io.IOException;
import java.io.Reader;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;

import com.opencsv.CSVReader;
import com.opencsv.CSVReaderBuilder;
import com.opencsv.bean.CsvToBean;
import com.opencsv.bean.CsvToBeanBuilder;

public class LeerLinhasOpenCsv {

public static void main (String[] args) throws IOException {
// TODO Auto-generated method stub
Reader Reader = Files.newBufferedReader (Paths.get ("LDAP_head.csv"));

CsvToBean csvToBean = new CsvToBeanBuilder (reader)
.withType (Pessoa.class) .build ();

list people = csvToBean.parse ();

(Person: person)
System.out.println (pessoa.toString ());


}   

}

But when I do the printing, everything "Null" appears

person [employee_name=null, user_id=null, domain=null, email=null, role=null]
person [employee_name=null, user_id=null, domain=null, email=null, role=null]
person [employee_name=null, user_id=null, domain=null, email=null, role=null]
person [employee_name=null, user_id=null, domain=null, email=null, role=null]
person [employee_name=null, user_id=null, domain=null, email=null, role=null]