Flex - communicating between 2 swf files

I am thinking of using http object, remote object.send does not seem to work. one swf is loaded by the other.

I want to send form variables to a swf file that is loaded by another swf file in the same domain

option: Shared object
Local Connection
global.variables
http Object

What is the most code economical (simplest) method to use.



see project at mycabservice.com

mapquest swf is loaded and i want to populte textinput.text with variables for address passed in from loader swf

suggestions