Navigation inside multi-pages posts

Hi!
The Bootstrap 2.2

the_bootstrap_link_pages not show <previouspagelink> and <nextpagelink> for multipage post.
may be fix below?

function the_bootstrap_link_pages( $args = array() ) {
	wp_link_pages( array( 'echo' => 0 ) );
	$defaults = array(
		'next_or_number'   => 'number',
		'nextpagelink'     => __( 'Next page', 'the-bootstrap' ),
		'previouspagelink' => __( 'Previous page', 'the-bootstrap' ),
		'pagelink'         => '%',
		'echo'             => true
	);

	$r = wp_parse_args( $args, $defaults );
	$r = apply_filters( 'the_bootstrap_link_pages_args', $r );
	extract( $r, EXTR_SKIP );

	global $page, $numpages, $multipage, $more, $pagenow;

	$output = '';
	if ( $multipage ) {
		if ( 'number' == $next_or_number ) {
			$output .= '<nav class=&quot;pagination pagination-small clear&quot;><ul><li><span class=&quot;dots&quot;>' . __( 'Pages:', 'the-bootstrap' ) . '</span></li>';
			if ( $more ) {
				$i = $page - 1;
				if ( $i && $more ) {
					$output .= '<li>' . _wp_link_page( $i ) . $previouspagelink. '</a></li>';
				}
			}
			for ( $i = 1; $i < ($numpages + 1); $i++ ) {
				$j = str_replace( '%', $i, $pagelink );
				if ( ($i != $page) || ((!$more) && ($page!=1)) ) {
					$output .= '<li>' . _wp_link_page($i) . $j . '</a></li>';
				}
				if ($i == $page) {
					$output .= '<li class=&quot;current&quot;><span>' . $j . '</span></li>';
				}

			}

			if ( $more ) {
				$i = $page + 1;
				if ( $i <= $numpages && $more ) {
					$output .= '<li>' . _wp_link_page( $i ) . $nextpagelink. '</a></li>';
				}
			}
			$output .= '</ul></nav>';
		}
	}

	if ( $echo )
		echo $output;

	return $output;
}

Thanks,
With Regards