change control point characteristics

Hi,

My project is to read the value of ADC and advertise live data over BLE.I have referred this Tutorial:1. Introduction — DA145XX Tutorial SDK peripherals (renesas.com) and I was able to successful to read ADC value in a time interval using app_easy_timer.But I got stuck when it came to the advertise live data by changing the value of control point characteristic. When I refer to other tickets all the answers end in change the value of control point characteristics. But I got confused how/where to change the value of control point in user_custs1_impl.c

Thanks

Femilda Philiph