Thanks Ashley for your quick answer,
I've read first 3 tutorials (I forgot about changing any global variable in the chat example to avoid that problem)
I also solved the problem with passing a global from host to peer. I would recommend to specify explicitly in the tutorial that broadcasted messages must be with variables of string type (if the global is a number you can do str(var)...)
Is it neccesary to put Sync and add client input value before connecting to signalling server (as in the pong example)?
Thanks a lot in advance,