def update_figure_data_dropdowns(_df1, _df2):
    """
    :param _df1: regular season DataFrame values
    :param _df2: play-off DataFrame values
    :return: return lists with dictionaries for drop down menus
    """
    if len(_df1) > 0:
        drop_values = [{'label': 'Regular season', 'value': 'Regular season'}]
    else:
        drop_values = []

    if len(_df2) > 0:
        drop_values += [{'label': 'Play-off', 'value': 'Play-off'}]

    return drop_values