Can't update door status in Homekit

[d-b-1]

First of all thank you @Mixiaoxiao for this great library!

I try to use Homekit for our door opener via a relay that supplies the door opener with power for 3 seconds at a time.
After the 3 seconds the door status should return to "Closed" (1) in Homekit.
Unfortunately, the status in Homekit remains in "Open", even if I use homkit_characteristic_notify

`#include <Arduino.h>
#include <arduino_homekit_server.h>
#include "wifi_info.h"
#define LOG_D(fmt, ...) printf_P(PSTR(fmt "\n") , ##VA_ARGS);

int relay = 15; // Pin D8

void setup() {
pinMode(relay, OUTPUT);
Serial.begin(115200);
wifi_connect();
//homekit_storage_reset();
my_homekit_setup();
}

void loop() {
my_homekit_loop();
delay(10);
}

//==============================
// HomeKit setup and loop
//==============================

// Zugriff auf die Definitionen des Accessories in my_accessory.c
extern "C" homekit_server_config_t config;

extern "C" homekit_characteristic_t cha_lock_current_state;
extern "C" homekit_characteristic_t cha_lock_target_state;

static uint32_t next_heap_millis = 0;

// Diese Funktion wird aufgerufen, wenn das Schloss via HomeKit betätigt wird
void set_lock(const homekit_value_t value) {
uint8_t state = value.int_value;
cha_lock_current_state.value.int_value = state;
if(state == 0){
// Schloss wurde via HomeKit geöffnet
open_lock();
}
if(state == 1){
// Schloss wurde via HomeKit geschlossen
close_lock();
}
// HomeKit-Status aktualisieren
homekit_characteristic_notify(&cha_lock_current_state, cha_lock_current_state.value);
}

void my_homekit_setup() {

cha_lock_target_state.setter = set_lock;
arduino_homekit_setup(&config);

}

void my_homekit_loop() {
arduino_homekit_loop();
const uint32_t t = millis();
if (t > next_heap_millis) {
// heap-Info alle 30 Sekunden im seriellen Monitor ausgeben
next_heap_millis = t + 30 * 1000;
LOG_D("Free heap: %d, HomeKit clients: %d",
ESP.getFreeHeap(), arduino_homekit_connected_clients_count());

}
}

/* Diese beiden Funktionen werden aufgerufen, wenn das Schloss in HomeKit betätigt wird */
void open_lock(){
Serial.println("Schloss öffnen");
// hier beliebige Aktion einfügen
digitalWrite(relay, HIGH);
cha_lock_current_state.value.int_value = 0;
homekit_characteristic_notify(&cha_lock_current_state, cha_lock_current_state.value);

delay(3000);
digitalWrite(relay, LOW);
cha_lock_current_state.value.int_value = 1;
homekit_characteristic_notify(&cha_lock_current_state, cha_lock_current_state.value);
}

void close_lock(){
Serial.println("Schloss schließen");
// hier beliebige Aktion einfügen
digitalWrite(relay, LOW);
}`

[yoppayop]

Did you figure this out?