Map Null Indicator to DS in trigger program

Hi to all.

I've searched on Google for some easy solution to this, but it seems there's nothing about.

We're starting to use Null-capabel field in or DB mainly for RI-related needs. Everuthing's goes ok, except for a trouble.

We use a lot trigger program to perform sone calculation based on changed to data. Usually, we defined the trigger in a way that allows change to PF to be transparet to the trigger: just recompile the trigger (we've wrote an in.house proc that update the PF, recompile dependecies and trigger without need to remember to do it) but, using null map indicator, i didn't have any way to match the null-indicator to the file-based DS. i just need to *count* the fileds and then say "if NullInd(x) then".

This is oblviously prone to error if a field will be added *before* the null-capable fields (and, of course, causes the code to be less clear).

Is there any way to map the null-field map to the DS ??? since the DS iself is declared basing on the file, it has the field null-capable, so i suppose it has it's' own null-field map, and ti would be nice to be able to copy or override this with the one coming from the Trigger's parameter.

Any hint will be appreciated. Thanks.