def return_on_field(wdg_clicked, wdg_autofill):
    """actualizamos auto-fill tras edicion"""
    val = wdg_clicked.get()
    if val.isdigit():
        wdg_autofill['text'] = str(int(val) + 1)
    else:
        wdg_autofill['text'] = str(val)
