[PD] get canvas information

[Michael Iber]

Hello,

2 questions:

I defined (in self-creating patches) canvas names according to the 
dynamic-receive-patch, which was posted on this mailing list by putting $0 
as the property-name. Is it possible to trigger, send the resulting 
canvas-number anywhere?

Is there a way to define global variables (like a=1)? If yes: how can I do 
it, and how can I access them?

Thanks and regards,
Michael