SEGSIZE register

Hi all:

I have a doubt, which is the way for manipulate SEGSIZE register? I have tried to do this by code, and seems to work, but when I restart the device, I always get the old value on SEGSIZE (0xDC). I’m trying to do this because I need more variable data space.

I’m using DC 9.62 and RCM3229.

Thank you in advance!!