Loading multiple records from php to flash


I am trying to load multiple records from MySql/php to flash.
I can get one record to display but not sure how to do multiple records.

Heres what I have so far...

$calculation = $_POST['dyears'];
$result = mysql_query("SELECT * FROM artists WHERE artname ='$calculation'");
if($row = mysql_fetch_array($result)){
		echo "&returnVal=".$row['imgpath'];
	}while($row = mysql_fetch_array($result));


here is what I have in flash

var lvOut:LoadVars = new LoadVars();
var lvIn:LoadVars = new LoadVars();
lvIn.onLoad = function(success) {
	if (success) {
		output = lvIn.returnVal;
	} else {
		output = "fail";
myBtn.onPress = function() {
	lvOut.dyears = "Dan";
	lvOut.sendAndLoad("http://www.liquidesignz.com/nwjv/dogyears.php", lvIn, "POST");

Any direction would be appreciated!