Thread: How to set the homepage show the coupons by "modified"

How to set the homepage show the coupons by "modified"

I open the coupon-loop.php(clipper) file and add the codes as follows.

<?php if (have_posts()) :
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args = array(
'orderby' => modified,
'showposts' => 10,
'paged' => $paged
);
query_posts($args);
while (have_posts()) : the_post(); ?>

It can't work.

How to change the homepage shows by modified time?

Thank you!

I can't use the way mentioned in the post.