Npgsql.NpgsqlException: column is of type integer but expression is of type boolean Severity: ERROR Code: 42804

See more:

C#

.NET

PostgreSQL

NHibernate

I have application in nhibernate & postgresql
migrating from sql to postgres
in postgres column type is integer but It gives error while update-insert data

[Property]
    [Column(1, Name = "is_deleted", SqlType = "INTEGER")]
    public virtual bool IsDeleted
    {
        get { return isDeleted; }
        set { isDeleted = value; }
    }

Npgsql.NpgsqlException: column "is_deleted" is of type integer but expression is of type boolean Severity: ERROR Code: 42804

I have try to map column type in app.config file but not working...

<property name="query.substitutions">
       true 1, false 0
     </property>

suggest a way to solve this Map column types boolean to integer...