"Set node time" setting in "ST BLE Sensor App" is inactive with STM32WB55 + BLE_HeartRate_ota example.

[Shum47]

Hello.

I run BLE_HeartRate_ota example on STM32WB55 (nucleo MB1355C). After connecting to ST BLE Sensor App I have corresponded HeartBit application GUI.

In the settings there is option "Set node time", but it is inactive.

What should I add to STM32WB55 SW to activate this feature on my smartphone? Could somebody advise an example or an article, please?