Upcoming Events With Categories not wor- Event Calendar Pro

<?php
    global $post;
    $all_events = tribe_get_events(array(
        'eventDisplay'=>'upcoming',
        'posts_per_page'=>1,
        'category__in' => array( 98, 99 )
    ));
    foreach($all_events as $post) {
    setup_postdata($post);
?>
    <h2><?php the_title(); ?></h2>
    <h5><?php echo tribe_get_start_date($post->ID, true, 'M j, Y'); ?></h5>
    <?php wpe_excerpt('wpe_excerptlength_event', 'wpe_excerptmore'); ?>
    <a href="<?php the_permalink();?>" class="readmore"><img src="<?php bloginfo('template_directory'); ?>/images/home-tab-read-more.png" alt="Read More" /></a>
<?php } //endforeach ?>