Customize tag cloud widget

functions.php

/* Customize tag cloud widget*/
	
function my_tag_text_callback( $count ) {
 return sprintf( _n('%s Articles', '%s Articles', $count), number_format_i18n( $count ) );
}
add_filter('widget_tag_cloud_args','set_number_tags');
function set_number_tags($args) {
$args = array('smallest'    => 11, 'largest'    => 11, 'number'    => 30, 'orderby'    => 'count','order'    => 'DESC', 'topic_count_text_callback' => 'my_tag_text_callback' );
return $args;
}