$.Ajax success data.value parse

Hello,

I'm trying to return the value in the success (data) part of my $ajax call. I've looked through Google but what I'm looking for is a coded solution below. I don't think it's that complex from similar examples I've seen. I just can't seem to get mine working.

When I add alert(data); I get...

<wddxPacket version='1.0'><header/><data><string>1</string></data></wddxPacket>


but I would like to be able to run 2 different functions if <string> eq "1" or "". Is that possible?

 	$.ajax({
		type: "POST",
		url: "app/func_main.cfc?method=login",
               data: data,
		cache: false,
		success: function (data) {

			alert(data);

                      if (data.string == 1) {
                           function1();
                     } else {
                          function2();
                     }

 		},
 		error: function (xhr, ajaxOptions, thrownError) {
        alert(xhr.status);
        alert(thrownError);
      	}

	});

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