Change the number of slides in featured slider

Hello! I’m working on a WP site with a custom template (that I did not create) and it has a featured slider for the homepage built in. There’s a limit set on how many slides show up and I can’t find the code to change it. I found this in theme-options.php:

$options[] = array( “name” => “Number of Slides”,
“desc” => “Choose how many slides should be in the featured slider”,
“id” => $shortname.”_slides_number”,
“std” => “5”,
“type” => “select”,
“options” => array(“3″,”4″,”5″,”6″,”7″,”8″,”9″,”10”));

but I have no idea what to do with it. I added an “11” to the array and that didn’t do anything, as you probably would have guessed. Any thoughts on how to adjust this?

Thank you!