@clevername27 thank you for the answer!
I have seen this post just now…because I lost hope to get any…I did not look for any more…
It seems that RNBO over HISE (with GUI) to Plugin works well but not more than 20 parameters. More than 20 parameters get ignored by HISE.
RNBO MidiFX over HISE to Plugin does not work unfortunately so far on my side…