STM32WPAN stops advertising after registering custom task

[KlemenPfce]

I have a application where stm32wb5mm is acting like a beacon. I got it to advertise configured data, now I am trying to advertise temperature measurement, for this, I need to dynamically update advertising data packages.

So my advertising works ok, when it is just the template:

  /* Initialize all configured peripherals */
  MX_RF_Init();
  MX_GPIO_Init();
  MX_RTC_Init();
  MX_I2C3_Init();
  /* USER CODE BEGIN 2 */

  //UTIL_SEQ_RegTask((1 << 0), 0, task2);


  /* USER CODE END 2 */

  /* Init code for STM32_WPAN */
  MX_APPE_Init();

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

  while (1)
  {
	//UTIL_SEQ_SetTask((1 << 0), 0);
    /* USER CODE END WHILE */
    MX_APPE_Process();

    /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */
}

But as soon as I enable the task that i created, the advertising stops:

  /* Initialize all configured peripherals */
  MX_RF_Init();
  MX_GPIO_Init();
  MX_RTC_Init();
  MX_I2C3_Init();
  /* USER CODE BEGIN 2 */

  UTIL_SEQ_RegTask((1 << 0), 0, task2);


  /* USER CODE END 2 */

  /* Init code for STM32_WPAN */
  MX_APPE_Init();

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

  while (1)
  {
	UTIL_SEQ_SetTask((1 << 0), 0);
    /* USER CODE END WHILE */
    MX_APPE_Process();

    /* USER CODE BEGIN 3 */

  }
  /* USER CODE END 3 */
}

Content of registered task:

{
	a_AdvData[23] = update_data();		//gets temperature data and stores in adv struct
	aci_gap_update_adv_data(sizeof(a_AdvData), (uint8_t*) a_AdvData);	//Update adv data
}

[KlemenPfce · Accepted solution]

Found solution, problem was that ID that I used for my custom task registration, was already taken by CubeMX configured firmware. Changed to task ID to "2", now works without a hitch.