Weekly popular posts

Im looking to make my popular post widget on the sidebar take into account the most popular posts on a 7 day range rather than since it’s been installed. How do I do that? My site is goodmusicinc.net

Here is the area of the code the developer said to change, since then he has been no help –

* @param bool $display_popular_icon - Display the popular posts icon.
* @param int $popular_icon_size - The size of the popular posts icon.
* @param int $popular_amount - The amount of popular posts to display.
* @param int $popular_chars - The number of characters to display per post.
* @param bool $display_popular_view_count - Display the popular view count.
* @param string $popular_tab_post_type - The post type to display the posts for.
*
*/
public function aaw_get_most_viewed_posts($display_popular_icon = true, $popular_icon_size = 50, $popular_amount = 5, $popular_chars = 35, $display_popular_view_count = true, $popular_tab_post_type = 'post') {
$post_views = '';
$post_title = '';
$out = '';

$args = array(
"posts_per_page" => $popular_amount,
"post_type" => $popular_tab_post_type,
"post_status" => "publish",
"meta_key"	 => "aaw_views",
//'meta_value_num' => '0',
"orderby" => "meta_value_num",
"order" => "DESC"
);

[Moderator Note: Please post code & markup between backticks or use the code button. Your posted code may now have been permanently damaged by the forum’s parser.]