Subparameter XEVENT in dynamic parameter RDC=

Product/components used and version/fix level: Natural mainframe 9.1.1 (RDCEXIT)

Detailed explanation of the problem: The subparameter XEVENT= of the dynamic parameter RDC= does not work. It is supposed to limit access to the RDCEXIT to the specified list of RDC events. In fact, using it appears to neutralize the RDCEXIT completely. The exit does not receive control at all. Nor does Natural report a syntax error for the RDC= dynamic parameter. Can anyone provide me with the correct syntax?

Error messages / full error message screenshot / log file:

Question related to a free trial, or to a production (customer) instance?