Result extraction for LS-DYNA input files using *CASE

How can I define in LS-OPT which output files are used for result extraction if I have mutliple output result files because of *CASE?

If you use a LS-DYNA inputfile that contains *CASE keywords in LS-OPT, you have to specify the Subcase field in the response or history definitions. The Subcase is the integer CASE ID associated with the *CASE parameter in LS-DYNA. This field is mandatory for disciplines that use *CASE parameter in LS-DYNA input files.

edit response_subcase

For details, see LS-OPT Manual, section History and Response Results.