Reply To: Fetching a URL parameter from within an asp_query_args callback function

[Ernest Marcinko]

The core is almost correct, this is the one you are looking for:

$args['post_primary_order'] = "customfp DESC";
$args['_post_primary_order_metakey'] = "evcal_srow";
$args['post_primary_order_metatype'] = "numeric"; // "string" or "numeric"