POST and GET with external SWF

1

I am trying to load an external SWF… all it is is a box made to look like an message box -

I want to pass into it the message to display.

I have tried to set a global variable and then use the loadMovie

this.createEmptyMovieClip(“NewError”,this.getNextHighestDepth());
txtError=Passwords;
NewError.loadMovie(“Error.swf”,0,“POST”);

but how do I retrieve the value of txtError in Error.swf…

Am I doing this correctly… I have found very little info on how to use the POST and GET with swfs

thanks for you help

John