Custom post type: “transition_post_status” action get title and other fields

I’ve come up with my own solution. I used the publish_post action instead of the transition_post_status action.

$this->loader->add_action( 'publish_cursussen', $plugin_admin, 'save_cursus_meta', 10, 2);

The problem before was the data not being saved yet.. with this new functions i can get the ID and with that ID the title

public function add_new_form( $cursus_title ){
        $form_id = 2; //Standard form
        $form = GFAPI::get_form($form_id);
        $form['title'] = $cursus_title;
        $form['limitEntriesCount'] = 100;
        $result = GFAPI::add_form( $form );
        return $result;
    }

    public function save_cursus_meta( $ID, $post ){
        $post_type = get_post_type($ID);
        $cursus_title = get_the_title($ID);
        // If this isn't a 'book' post, don't update it.
        if ( "cursussen" != $post_type) return;

        $myPost = get_post($ID);
        if( $myPost->post_modified_gmt == $myPost->post_date_gmt ){
            $this->add_new_form($cursus_title);
        }else{
            return;
        }
    }

Hope this can help somebody in the future!