[flexcoders] Try again...Error with HTTPService POST making malformed element

[i.yoho]

Sorry if this posts twice. I just had an "all thumbs moment" trying to
explain this error...

I am new to Flex and need help with getting the appropriate containers
set up to send GOOD data from a swf to PHP to do the write to an XML file.

// The beginning of the error is...
[RPC Fault faultString="Error #1090: XML parser failure: element is
malformed." ....

// The beginning of the string that gets passed according to the
Apache access log is...
?param2=%3Cplayer%20type%3D%22r%22%20id%3D%228326%22%2

//This part works fine if I am passing a string like "Hello world"...
<mx:HTTPService
        id="myService"
        url="saveResults.php" resultFormat="e4x"
        />

// I suspect that I am not setting up the associative array properly
here. But I don't understand enough to fix it...

var params:XML = new XML();
var n:Number = 0;
for (var players:String in xfrObj){
params["param"+n] = xfrObj["player"+n].toString();
n=n+1;  
}
myService.send(params);

Thanks,
Imogene