[sr-dev] module writing & per message variable within my module

So Im writing a custom module to implement some of our business logic, there are a few steps that im building into the module, for example conform_callerid conform_destination what I want to achive should be fairly simple, but let me explain and im sure someone will tell me where to look. when I call conform_callerid, I want to store a few bits of info so Initially I store them in a global variable ( yup lazy & dangerous I guess ) then I write the pv "get" function, to return the value from the global. this was only done as a quick proof of concept. but being global, im sure the variable will be overwritten by other message etc etc.. so I effectively want to store some custom fields against the message. I didnt see this on the msg structure, but maybe I missed something or is there a better way to achieve this ?? basically I want to be able to call conform_callerid then when I call conform_destination I want to look at some fields from the conform_callerid process ( within the context of the message we are processing ) any pointers would be appreciated. -- Sincerely Jay