What is the Grass Valley Server?
I can assure you that the commands are being sent :) But these are standard AMP commands so I am not sure what your Server supports or what the requirements are on it's side for configuration.
Generally Stratus is the over arching controls system but then the playout servers are something else like K2s... we need to make sure that the video server is setup to accept the AMP commands and also that you are setup to send to the playout server and not to the Stratus server..
Les
#Carbonite