rendering form inside included template with part of form and radiolist

Member | 495

i have this form definition in latte

{form addPointForm}
    {include "../@buttons.latte", form => $form}

and in buttons i have something like this

{label finalAction:addPoint}
    {input finalAction:addPoint}

and the exception is

Undefined variable: _form

where is the problem? should not be the form passed into included template automatically?