Separate widget on separate categories

Hopefully someone can help me. I need to have separate text widgets that appear on different category pages. I added this to my function.php but it doesn’t help, anyone?
Thanks!

if(function_exists(‘register_sidebar’)) {
foreach((array)(get_categories()) as $category) {
register_sidebar(array(
‘name’ => ‘Categorie : ‘ .$category->cat_name,
‘before_widget’ => ‘<div id=”%1$s” class=”%2$s widget”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h3 class=”widget-title”>’,
‘after_title’ => ‘</h3>’, ));
}

foreach((array)(get_pages()) as $page) {
register_sidebar(array(
‘name’ => ‘Page : ‘ .$page->post_name,
‘before_widget’ => ‘<div id=”%1$s” class=”%2$s widget”>’,
‘after_widget’ => ‘</div>’,
‘before_title’ => ‘<h3 class=”widget-title”>’,
‘after_title’ => ‘</h3>’, ));
}
}