Custom event filter

Hi guys,
I can’t run event search filter in a tabbed page in my home page:
here the example
https://www.dayroma.it/wp-content/uploads/2016/03/search.jpg

I set from date and to date, then I click the search button but events list in tabbed page is not refreshed filtered.

I made this custom filter through this code:

function display_custom_search( $attr, $content = null ) {

	$search_args = em_get_search_form_defaults();
	em_locate_template('templates/events-search.php', true, array('args'=>$search_args));

	$args['limit'] = !empty($args['limit']) ? $args['limit'] : get_option('dbem_events_default_limit');
						if( !empty($args['ajax']) ){ echo '<div class="em-search-ajax">'; } //AJAX wrapper open
						if( get_option('dbem_event_list_groupby') ){
							em_locate_template('templates/events-list-grouped.php', true, array('args'=>$args));
						}else{
							em_locate_template('templates/events-list.php', true, array('args'=>$args));
						}
						if( !empty($args['ajax']) ) echo "</div>"; //AJAX wrapper close

    /*return '<a href="http://twitter.com/filipstefansson" class="twitter-button">' . $content . '</a>';*/
}
add_shortcode('custom_search', 'display_custom_search');

If this code is wrong, how can I filter events in my home page?

Thank you everyone

https://ww.wp.xz.cn/plugins/events-manager/