How to increment using TableGenerator?

public class Customers implements Serializable {

@Id

@TableGenerator(name="CUST_GENERATOR",

table="GENERATOR_TABLE",

pkColumnName="PRIMARY_KEY_COLUMN",

valueColumnName="VALUE_COLUMN",

pkColumnValue="ID",

allocationSize=10)

@GeneratedValue(strategy=GenerationType.SEQUENCE, generator="CUST_GENERATOR")

@Column(name = "ID", nullable = false)

private Integer id;

@Column(name = "FIRST_NAME")

private String firstName;

@Column(name = "MIDDLENAME")

private String middlename;

@Column(name = "LASTNAME")

private String lastname;

@Column(name = "ADDRESS")

private String address;

@Column(name = "TELEPHONE")

private String telephone;

@Column(name = "MOBILEPHONE")

private String mobilephone;

CJ_125a at 2007-7-12 21:06:39 >