CRUD : Cannot create model with undefined play.db.jpa.Blob field

[Olivier]

I have a model with a "Blob" property :

import play.db.jpa.Blob;
import play.db.jpa.Model;

@Entity
public class Article extends Model {

    public String name;

    public Blob image;
}

Image property is not mandatory (can be NULL in db), but when I try to create an article instance with the crud module, without specify the image value, play! crash with the following error :

10:15:49,284 INFO ~ Connected to jdbc:mysql://localhost/mypc?useUnicode=yes&characterEncoding=UTF-8&connectionCollation=utf8_general_ci
10:15:49,948 DEBUG ~ insert into Article (name, image) values (?, ?)
com.mysql.jdbc.JDBC4PreparedStatement@1ea6778: insert into Article (name, image) values ('Blabla', ** NOT SPECIFIED **)
10:15:49,949 WARN ~ SQL Error: 0, SQLState: 07001
10:15:49,949 ERROR ~ No value specified for parameter 2
10:15:50,057 ERROR ~

If I specify the image value, the article is correctly saved.