Create s scheduled task(Plesk) or cron job in woocommerce - php

Question

I have a woocommerce and i use berocket product filters plugin. The plugin has a button that purge cache in its setting page. I want to create a scheduled task from inside plesk that hosts the woocommerce that trigger that function every 30 minutes.
I have located,i think, the function that use the above button but i need help creating the scheduled task.
I have the function in the main.php file located in the root directory of the plugin.
public function section_purge_cache ( $item, $options ) {
$html = '<tr>
<th scope="row">' . __('Purge Cache', 'BeRocket_AJAX_domain') . '</th>
<td>';
$old_filter_widgets = get_option('widget_berocket_aapf_widget');
if( ! is_array($old_filter_widgets) ) {
$old_filter_widgets = array();
}
foreach ($old_filter_widgets as $key => $value) {
if (!is_numeric($key)) {
unset($old_filter_widgets[$key]);
}
}
$html .= '
<span class="button berocket_purge_cache" data-time="'.time().'">
<input class="berocket_purge_cache_input" type="hidden" name="br_filters_options[purge_cache_time]" value="'.br_get_value_from_array($options, 'purge_cache_time').'">
' . __('Purge Cache', 'BeRocket_AJAX_domain') . '
</span>
<p>' . __('Clear attribute/custom taxonomy cache for plugin', 'BeRocket_AJAX_domain') . '</p>
<script>
jQuery(".berocket_purge_cache").click(function() {
var $this = jQuery(this);
if( ! $this.is(".berocket_ajax_sending") ) {
$this.attr("disabled", "disabled");
var time = $this.data("time");
$this.parents(".br_framework_submit_form").addClass("br_reload_form");
$this.find(".berocket_purge_cache_input").val(time).submit();
}
});
</script>
</td>
</tr>';
return $html;
}

Answer 1

Since this is a product from BeRocket i would suggest you to ask this question in the support forum of the plugin itself.
Here you go: https://wordpress.org/support/plugin/woocommerce-ajax-filters/