Php-flash comunication-problem

ok, i know there are several tutorials on this issue, getting php-variables into flash. but , maybe im to stupid, i cant get it work properly when i use dynamic content:
here is the actionscript:


this.createEmptyMovieClip("target_mc", this.getNextHighestDepth());
loadVariables("params.php", target_mc);
function checkParamsLoaded() {
 if (target_mc.done == undefined) {
 trace("not yet.");
 } else {
 trace("finished loading. killing interval.");
 trace("-------------");
 for (i in target_mc) {
 trace(i+": "+target_mc*);
 }
 trace("-------------");
 clearInterval(param_interval);
 }
}
var param_interval:Number = setInterval(checkParamsLoaded, 100);

this is the php:


<?php

echo (var1="hello"&var2="goodbye"&done="done");

?>

and this is the result:

finished loading. killing interval.

done: “done”;

?>

var2: “goodbye”
<?php

im thankful for any help

echo var1: “hello”