Error with column_name database

[remydev]

Hello,
I get an error, i don't understand.

My objet is

class Brand
        include Clear::Model
        primary_key  
        column name : String

end

The database is

CREATE TABLE public.brands
(
    id integer NOT NULL DEFAULT,
    name text COLLATE pg_catalog."default"
)

I wish change de column name in the database

class Brand
        include Clear::Model
        primary_key  
        column name : String, column_name: "brand_name"
end

Without change the database, i get this error :
Exception: You're trying to access to the column name but it is not initialized.

If I change the database name, I get the same error. It's looks like the column_name is not read
I tried with another object, I got the same result. The column attribute is not used in the query

Thanks