1 external .swf talking to another external .swf

Hey All,

I’ve got a task at work and am trying to figure out something. I’ve put two different swf’s on a 3 framed website. One frame has a .swf that contains buttons, another contains dynamic text, the last is just a main site. If I wanted to take data from the buttons .swf and have it interact with the text .swf should I use xml or is there another way for 2 swf’s to talk to each other?

GOAL:
Click a button on aaa.swf and have it interactively update the dynamic textbox in bbb.swf…all within an .html file.

Thanks.