PHP Session

Hi,

I've tried to create a multiform but got stuck in PHP sessions. The session doesn't start when added

includes/ $this->loader->add_action( 'wp_ajax_public_start_form_session', $plugin_public, 'start_form_session' ); $this->loader->add_action( 'wp_ajax_nopriv_start_form_session', $plugin_public, 'start_form_session' );

public/ public function start_form_session() { if (session_status() === PHP_SESSION_NONE) { session_start(); } }

Anybody that can point me to the right direction? :)