Coupon code for a particular discount has been added to an order - this is rule does not work for custom coupon type

I created a new type of coupon. Add to rule (commerce_discount_rule_discount_mycoupontype) condition - "Coupon code for a particular discount has been added to an order". It turns out that this condition does not work correctly.

This occurs because:

function commerce_coupon_code_grants_discount($code, $discount_id) {
  $query = new EntityFieldQuery();
  $results = $query
    ->entityCondition('entity_type', 'commerce_coupon')
    ->propertyCondition('type', 'discount_coupon')  // Always only one type of coupon usage.
    ->propertyCondition('code', $code)
    ->propertyCondition('status', TRUE)
    ->fieldCondition('commerce_discount_reference', 'target_id', $discount_id)
    ->execute();

  return !empty($results['commerce_coupon']);
}

Ie always a request is made for one type of coupon.