Help Dealing with Booking Plugin

Replies: 0

Hi,
I’m trying to deal with W3 cache and a Booking plugin, that shows a calendar with customer bookings that I don’t want to be cached (because users need to check availability in real time).
As I don’t want to exclude pages from cache, I looked for documentation, and the plugin is suggesting using the following for WP Fastest cache:

function my_custom_flush_cache() {
wpfc_clear_all_cache();
}
add_filter( 'hb_reservations_updated', 'my_custom_flush_cache' );
add_filter( 'hb_blocked_accom_updated', 'my_custom_flush_cache' );

I tried editing the wpfc_clear_all_cache(); with
$w3_plugin_totalcache->flush_pgcache();

but I’m always getting server error.
How can I make W3 cache purge automatically when the two filters are applied?

Thanks in advance for your help!