[Plugin: wp_pagenavi] don't work with WP_Query

hi I have a problem with the query,

<?php
$my_query = new WP_Query( array( 'orderby' => 'comment_count', 'ignore_sticky_posts' => 1, 'paged' => get_query_var('paged') ) );

while ( $my_query->have_posts() ) : $my_query->the_post(); ?>
<?php echo the_title();?>
<?php endwhile;
wp_pagenavi( array( 'query' => $my_query ) );
wp_reset_postdata();	// avoid errors further down the page
?>

Links appear, but when I click, it doesn’t pass to the next page.