[Plugin: Yet Another Related Posts Plugin] Order By problem!

Hello!
My site is kind of index of many things but i would need to have two different codes at same time with YARP but im not sure how to do it. So if you could help me! Thanks and now i will explain rest of it.

I would need it to order from oldest post to newer but im not sure how to do it, my code of it is atm like this:
<?php related_posts(array(limit => (500),orderby =>(desc))); ?>

So if anyone can help me, then please help me 😛 ! Thank you.