Update Polyspace DRS from a script

I would like to populate range data for my DRS file from a text file. I know there is a way to import a drs file from a text file, but was curious if there was a way to just update an existing DRS (which is in the xml format) with ranges from the text file. I don't want to just reimport the text file, because I don't want to lose any data in it. I just want to overwrite a subset of the signals ranges with the updated ranges.

I was curious if there was any built in features that could help with this, or if I will need to try to write a script to parse these files and update the existing xml myself directly?

[Christoph Reitbauer]

I have a similar issue: i want to use additional min/max values for drs file generation for some variables. Is it possible to specify external data ranges within an external file that can be passed to the DRS generator or is there a possibility to call some Perl/Python scripts during drs file generation?