fix logic

    if env_var in locals():

        os.environ[env_var] = str(locals()[env_var])

        return locals()[env_var]

    #if default is not None:

    #    os.environ[env_var] = str(default)

    if default is not None:

        os.environ[env_var] = str(default)

    return default

def check_multi_environment(env_var_multi, multi_value, env_var):

def check_multi_environment(env_var_multi, multi_value, env_var, default):

    """ Check if the mod environment variable exists,

    if so, return that. If not, check if the vanilla variable

    has been specified and return that value instead.

    :param env_var_multi: the modified environment variable to look for

    :param multi_value: the value of the modified environmental

    :param env_var: the vanilla environment variable to look for

    :param default: the vanilla environment variable default value

    """

    # assume check environment has already been run on the init

    # check for existence of new var, if it doesn't exist,

    # return multi_value

    # check for existence of new var, if it exists, set environment

    # return multi value

    if str(env_var_multi) in os.environ:

        multi_value = check_environment(env_var_multi, multi_value)

        check_environment(env_var_multi, multi_value)

        return os.environ[env_var_multi]

    # by now:

    # exists - just return value - we don't need to set

    # set environment anyways for mutli

    os.environ[env_var_multi] = multi_value

    # set environment for vanilla and return vanilla

    check_environment(env_var, default)

    return os.environ[env_var]