bid-info values must be positive integers

[cornernote]

My code:

\FacebookAds\Api::init($app_id, $app_secret, $access_token);
$adSet = new \FacebookAds\Object\AdSet(null, $account_id});
$adSet->setData(array(
    \FacebookAds\Object\Fields\AdSetFields::NAME => $name,
    \FacebookAds\Object\Fields\AdSetFields::CAMPAIGN_GROUP_ID => '6017312881528',
    \FacebookAds\Object\Fields\AdSetFields::CAMPAIGN_STATUS => \FacebookAds\Object\AdSet::STATUS_ACTIVE,
    \FacebookAds\Object\Fields\AdSetFields::DAILY_BUDGET => '1',
    \FacebookAds\Object\Fields\AdSetFields::BID_TYPE => 'CPC',
    \FacebookAds\Object\Fields\AdSetFields::BID_INFO => array('CLICKS' => 'min_1_cent'),
    \FacebookAds\Object\Fields\AdSetFields::TARGETING => array(
        'geo_locations' => array('countries' => array('AU')),
    ),
));
$adSet->create();

The error I get is:

exception 'FacebookAds\Http\Exception\AuthorizationException' with message '(#100) bid-info values must be positive integers' in /vagrant/app/vendor/facebook/php-ads-sdk/src/FacebookAds/Http/Exception/RequestException.php:113

The specs say that bid-info should be a JSON object, so I assumed the PHP array should work:
https://developers.facebook.com/docs/reference/ads-api/adset/v2.2

Can you help with the value I should put in here?

Thanks.

[cornernote]

I should note that I would like to set a max bid of $0.30. If you could assist with that it would be greatly appreciated.

[paulbain]

the min_1_cent in the doc means that the integer value you set must be a least 1, it doesn't mean that there is some enum with the value min_1_cent. The bid value you set is always the maximum you want to pay to set it to 30.

[cornernote]

ah-ha... thanks