Vars to external swf loaded in new window?

1

so i’ve got a swf that opens a new window with a swf . (AS3)

i want to send these 4 :

var cname :String;
var cwedding_date:String;
var cxml_path:String;
var cpassword:String;

this are set to the corresponding values before redirecting .

function redirect(){
MovieClip(root).go_back_to_master_menu_from_login();

var requestaa:URLRequest=new URLRequest("clients.swf");
navigateToURL(requestaa);

}

how can i send these 4 to the clients.swf and how do i check on the other side if they exist or not ?

i searched and got all sort of details about flash -> php , as2 to as3 , swf loaded in the same swf as child etc. But i couldn t not find something spefici to my problem .

Also i want to use something like POST so the url looks clean as it is .

Thank you for your time