[NeedHELP]Custom Subscription Payment Method

[ReddeR1337]

I wanna add custom Sub method

<?php

class vB_PaidSubscriptionMethod_custom extends vB_PaidSubscriptionMethod
{
function generate_form_html($hash, $cost, $currency, $subinfo, $userinfo, $timeinfo)
{
$form['action'] = 'customURL';
$form['method'] = 'get';

return $form;
}
}

?>

But with this code i have error
Fatal error: Class 'vB_PaidSubscriptionMethod' not found in /home/*/*/www/includes/paymentapi/class_custom.php on line 4


I need redirect to custom page after pressing Order Using

https://vborg.vbsupport.ru/external/2016/09/6.png

How i can do that ?

[ReddeR1337]

Any help please

[ReddeR1337]

Help please