MSPM0G3507: CCS working w bitfield : missing offering to select

Hi everybody , 

i m on latest CCS  and  latest SDK  MSPM0

I would like to ask you about registers bit fields, it is not showing up when I am trying to set the registers.

Do I miss something, and how can I enable the bit fields?  could you help me ?

see picture hereunder 

thank you 

BR
Carlo