Passing Variables to loaded SWF Movies

I’m creating something that I’m trying to keep a bit compartmentalized, but I am having a problem finding out how to pass variable information to a SWF file that I loaded dynamically via the flash.display.loader.

Any suggestions? So far all my variables are only working in the sections I have them in, not globally like I would prefer on some variables. I need to pass this information among several movie clips too, not just the dynamic ones.