2 meta_value order in [su_posts]

Hi everubidy

I need to order by a second meta_value in [su_posts]

I have now:

[su_posts post_type=”agenda” posts_per_page=”4″ template=”templates/agenda.php” post_status=”publish” meta_key=”dia” order=”asc”]

but I need order by a second meta_value “hora”. I try:

[su_posts post_type=”agenda” posts_per_page=”4″ template=”templates/agenda.php” post_status=”publish” meta_key=”dia,hora” order=”asc”]

but doesn’t work