mistake in code

/**
* Returns the expiry date for the given product version and transaction.
*
* @param $txnid Transaction in which the product version was purchased
* @param $vid Product version for which expiry date is sought.
* @return Expiry date (local timestamp) for the given product version
* purchased as part of the transaction given.
*/
function ec_recurring_product_get_expiry($txnid, $vid) {
return db_result(db_query_range('SELECT expiry FROM {ec_recurring_expiration} WHERE txnid = %d
AND vid = %d AND rid <= 0 ORDER BY expiry DESC', 0 , 1));
}

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shouldn't passed parameters be $txnid, $vid but not 0, 1 ?

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