ADCs' clocks divide by two

Hello TI,

I'm using the High Voltage Motor Control and PFC Developer's Kit (TMS320C28035) and my application requires ADC in more slowly mode. So i would like to divide by two (60/2 MHz) the system clock to ADC. I did that by code

EALLOW;

AdcRegs.ADCCTL2.all = 1;

EDIS; 

Hovewer, the real value in this register is still 0. I'm using the HVACI_Sensored example and above mentioned code I write in ADC_MACRO_INIT(). Please, can you write me if the values in that register can be changed?

Thank you,

Tom.