TUIODecoder using ccv1.5 vs reacTIVisoion1.4

i just want to compare ccv1.5 and reactivision1.4 tracking fiducials. reactivison seems to be more percise.
TUIODecoder-node: the problem is (using reactivision), that the SessionID is a running number, not the displayed fiducialID.
using ccv the sessionID always returns the FiducialID.

any ideas how i can solve that problem?

excerpt from: tuio specification

if what you say is correct it seems that the ccv1.5 simply does not follow the specification.

if i understand it correctly the Class ID output should return the unique symbol/fiducial/marker ID you are interested in.