Change Log Not showing Field changes

Hi,

I have made some changes for the Field ' ZTERM' ( payment terms ) through a BADI. But when we go to XD02 and see the Change Log it does not show any updates for this field. The 'Change Document' check box is already checked for the ZTERM fields and I was able to see the CDHDR and CDPOS entries . But how do we make this to come in the 'Environment - Account Changes- All fields ' ( log ) in XD02. Please help.

It is only recording the changes done in transactional level.

Thanks,

KP