catch float ValueError default -1

                if isinstance(x, gr.Textbox) and field == 'value':  # due to an undersirable behavior of gr.Textbox, if you give it an int value instead of str, everything dies

                    saved_value = str(saved_value)

                elif isinstance(x, gr.Number) and field == 'value':

                    try:

                        saved_value = float(saved_value)

                    except ValueError:

                        saved_value = -1

                setattr(obj, field, saved_value)

                if init_field is not None: