Inserts into procedures

Hello, I’ve been playing arround with procedures and tried putting the comment insert into a procedure. I’ve got some trouble and was wondering if you guys could take a look.

function wp_insert_comment($commentdata) {
	$comment_ID = comment_ID;
	$comment_post_ID = comment_post_ID;
	$comment_author = comment_author;
	$comment_author_email = comment_author_email;
	$comment_author_url = comment_author_url;
	$comment_author_IP = comment_author_IP;
	$comment_date = comment_date;
	$comment_date_gmt = comment_date_gmt;
	$comment_content = comment_content;
	$comment_karma = comment_karma;
	$comment_approved = comment_approved;
	$comment_agent = comment_agent;
	$comment_type = comment_type;
	$comment_parent = comment_parent;
	$user_id = user_id;
	global $wpdb;
	extract(wp_unslash($commentdata), EXTR_SKIP);

	if ( ! isset($comment_author_IP) )
		$comment_author_IP = '';
	if ( ! isset($comment_date) )
		$comment_date = current_time('mysql');
	if ( ! isset($comment_date_gmt) )
		$comment_date_gmt = get_gmt_from_date($comment_date);
	if ( ! isset($comment_parent) )
		$comment_parent = 0;
	if ( ! isset($comment_approved) )
		$comment_approved = 1;
	if ( ! isset($comment_karma) )
		$comment_karma = 0;
	if ( ! isset($user_id) )
		$user_id = 0;
	if ( ! isset($comment_type) )
		$comment_type = '';

	//$data = compact('comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_date', 'comment_date_gmt', 'comment_content', 'comment_karma', 'comment_approved', 'comment_agent', 'comment_type', 'comment_parent', 'user_id');
	$wpdb->insert($wpdb->comments, '$comment_ID','$comment_post_ID', '$comment_author', '$comment_author_email', '$comment_author_url', '$comment_author_IP', '$comment_date', '$comment_date_gmt', '$comment_content', '$comment_karma', '$comment_approved', '$comment_agent', '$comment_type', '$comment_parent', '$user_id');
	//$wpdb->insert($wpdb->comments, 'comment_post_ID', 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_date', 'comment_date_gmt', 'comment_content', 'comment_karma', 'comment_approved', 'comment_agent', 'comment_type', 'comment_parent', 'user_id');

	$id = (int) $wpdb->insert_id;

	if ( $comment_approved == 1 )
		wp_update_comment_count($comment_post_ID);

	$comment = get_comment($id);

	/**
	 * Fires immediately after a comment is inserted into the database.
	 *
	 * @since 2.8.0
	 *
	 * @param int $id      The comment ID.
	 * @param obj $comment Comment object.
	 */
	do_action( 'wp_insert_comment', $id, $commen );

	wp_cache_set( 'last_changed', microtime(), 'comment' );

	return $id;
}

So here I send all the variables to another function, because it didn’t work with the array solution that was previously used. So i send the variables to

function _insert_replace_helper( $table, $comment_ID, $comment_post_ID, $comment_author, $comment_author_email, $comment_author_url, $comment_author_IP, $comment_date, $comment_date_gmt, $comment_content, $comment_karma, $comment_approved, $comment_agent, $comment_type, $comment_parent, $user_id, $format = null, $type = 'INSERT' ) {

$sql = "CALL CommentsProcedure('$comment_ID', '$comment_post_ID', '$comment_author', '$comment_author_email', '$comment_author_url', '$comment_author_IP', '$comment_date', '$comment_date_gmt', '$comment_content', '$comment_karma', '$comment_approved', '$comment_agent', '$comment_type', '$comment_parent', '$user_id')";

		return $this->query( $this->prepare( $sql, $comment_ID, $comment_post_ID, $comment_author, $comment_author_email, $comment_author_url, $comment_author_IP, $comment_date, $comment_date_gmt, $comment_content, $comment_karma, $comment_approved, $comment_agent, $comment_type, $comment_parent, $user_id ) );
	}

And heres the procedure i made

DELIMITER $$

CREATE PROCEDURE <code>CommentsProcedure</code>(IN comment_ID bigint(20), IN comment_post_ID bigint(20), IN comment_author tinytext, IN comment_author_email VARCHAR(100), IN comment_author_url VARCHAR(200), IN comment_author_IP VARCHAR(100), IN comment_date datetime, IN comment_date_gmt datetime, IN comment_content text,
 IN comment_karma int(11), IN comment_approved VARCHAR(20), IN comment_agent VARCHAR(255), IN comment_type VARCHAR(20), IN comment_parent bigint(20), IN user_ID bigint(20))
BEGIN
	INSERT INTO wp_comments(comment_ID, comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_karma, comment_approved, comment_agent, comment_type, comment_parent, user_id)
	VALUES(comment_ID, comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_karma, comment_approved, comment_agent, comment_type, comment_parent, user_id);

END
$$

DELIMITER ;

I have no clue what i do wrong, would be helpful if someone could give me some guidance.(Sorry for the bad english, not native speaker, feel free to ask if something is unclear.)
Thanks in advance