Recently I tried to simulate COM for 50G-PAM4 (still defining under IEEE802.3bs project), but turned out it is not supported yet. Then I thought up if there is the file or something containing COM configuration parameters, it is enabled to do simulation for future defined technologies by modifying it. Unfortunately I have no idea how it would be complicated, but I would be glad if my idea would be of help to the future version.
Support for ALL the operating modes defined in the IEEE802.3bs, IEEE802.3 and OIF-CEI04.0 specifications that are still under development was added and is available for trial in HyperLynx VX2.3 Beta3 that can be downloaded from the Mentor's Support website. Your feedback would be appreciated!