Not be able to write DSP DAC system registers

Hi 

i am trying to use DAC for which i initialized the corresponding DAC registers. For some reason, those registers are not being set to the value i am trying to set them to. I did a single step execution but i dont see a change in the register value. Below is the code i am using.

void initDAC(void)
{
EALLOW; // To write to EALLOW protected registers
DacaRegs.DACCTL.bit.DACREFSEL = 1;
DacaRegs.DACOUTEN.bit.DACOUTEN = 1; //Enable DAC output
DacaRegs.DACCTL.bit.LOADMODE = 0; //Enable DAC output
EDIS; // To disable write protected registers

EALLOW; // To write to EALLOW protected registers
DacbRegs.DACCTL.bit.DACREFSEL = 1;
DacbRegs.DACOUTEN.bit.DACOUTEN = 1; //Enable DAC output
DacbRegs.DACCTL.bit.LOADMODE = 0; //Enable DAC output
EDIS; // To disable write protected registers

EALLOW; // To write to EALLOW protected registers
DaccRegs.DACCTL.bit.DACREFSEL = 1;
DaccRegs.DACOUTEN.bit.DACOUTEN = 1; //Enable DAC output
DaccRegs.DACCTL.bit.LOADMODE = 0; //Enable DAC output
EDIS; // To disable write protected registers
} //End of initDAC()

when i checked the above registers in the debug mode, those values dont get set.

CCS version : 6.1

SYSBIOS : 6.41.4.54

Compiler: 6.4.2

Processor: TMS320F28377D

Any help would be gratly appreciated.

Thanks