HC/LC filter on Generic Remote. How?

I notice some remote controls can connect to new HC/LC filters in Cubase channel.
But I cannot find a way to do it with Generic Remote, new filters are not included yet.
Is there a way to do it via editing some xml file?

Here is mention of hidden GR parameters that can be edited in xml. http://www.steinberg.net/forums/viewtopic.php?f=181&t=33077&p=213132&hilit=generic+remote+hidden#p213132

Has anybody a list of these hidden parameters?