PostgreSQL Boolean

Hi
DB = PostgreSQL
I defined a model with a boolean field (using Data modeler for PostgreSQL model)

    [Column('extended_control', [])]
    Fextended_control: Nullable<Boolean>;

But when posting data with JSON containing (direct post to auto generated table xData method)

    "extended_control": true,

I got an exception regarding the content of value (here in french)

{
    "error": {
        "code": "PgNativeException",
        "message": "[FireDAC][Phys][PG][libpq] ERREUR: la colonne « extended_control » est de type boolean mais l'expression est de type character varying.\r\nVous devez réécrire l'expression ou lui appliquer une transformation de type."
    }
}

It means the xdata/aurelius doesn't adapt content of field boolean to the right available content for PG, if I'm right

How to use Boolean with PG with xdata/aurelius please ?

Thanks for help

Sylvain