Remember a variable?

I have a navigation that contains main buttons with sub buttons under each. On each sub button I have this to load my external swf’s. The navigation is loaded into level100. Check it out here

_level0.mcl.loadClip ("main"+_root.num+"/sub"+itemnum+".swf", 50); 

The _root.num and the itemnum are the variables that change depending on what I’ve clicked in my menu system.

In my sub swf’s I have to manually declare these variables (the same numbers as the one above) cause I don’t know how to get them from that swf to this? I need them to be able to load the correct xml file.

var main:Number = 1;
var sub:Number = 1;