{
	
	var composition = app.project.activeItem;
	var layers = composition.selectedLayers;
	var properties = composition.selectedProperties;
	var numFrames = Math.floor(composition.duration / composition.frameDuration);
	
	var outputString = ''
	output('<?xml version="1.0" encoding="utf-8"?>');
	output('<data>');
	
	buildFile();
	writeFile();
	
	function buildFile() {
		if (properties.length == 0) {
			alert("No properties selected.");
		}
		else {
			exportProperties();
		}
	}
	
	function output(value) {
		outputString += value + "\r";
	}
	
	function writeFile() {
		output('</data>');
		var file = new File(Folder.desktop.absoluteURI + "/" + "export.txt");
		file.open("w","TEXT","????");
		file.write(outputString);
		file.close();
		file.execute();
	}
	
	function exportProperties() {
		var i = 0;
		var l = properties.length;
		// build properties list
		var x = 0;
		var y = properties.length;
		var source = [];
		var sourceCount = 0;
		var currentContainer;
		for (; x<y; ++x) {
			if (properties[x].valueAtTime != undefined) {
				// find parent
				var parentName;
				if (properties[x].parentProperty != undefined) {
					parentName = properties[x].parentProperty.name;
				}
				else {
					parentName = "Undefined Parent Source";
				}
				// build property
				output('	<source name="' + parentName + '">');
				exportProperty(properties[x])
				output('	</source>');
			}
		}
	}
	
	function exportProperty(prop) {
		var val = prop.valueAtTime(0 * composition.frameDuration, true);
		if (val.length > 1) {
			exportMultiValue(prop);
		}
		else {
			exportSingleValue(prop);
		}
	}
	
	function exportSingleValue(prop) {
		var i = 0;
		var l = numFrames;
		var str = '		<property name="' + prop.name + '">\n';
		for (; i<l; ++i) {
			var time = i * composition.frameDuration;
			var val = prop.valueAtTime(time, true);
			str += '			<keyframe time="' + time + '" frame="' + i + '" value="' + val + '"/>\n';
		}
		str += "		</property>";
		output(str);
	}
	
	function exportMultiValue(prop) {
		var i = 0;
		var l = numFrames;
		var str = '		<property name="' + prop.name + '">\n';
		for (; i<l; ++i) {
			var time = i * composition.frameDuration;
			var val = prop.valueAtTime(time, true);
			if (val.length > 0) {
				str += '			<keyframe time="' + time + '" frame="' + i + '"';
				var x = 0;
				var y = val.length;
				for (; x<y; ++x) {
					str += ' value' + x + '="' + val[x] + '"';
				}
				str += '/>\n';
			}
		}
		str += "		</property>";
		output(str);
	}
	
	function outputObject(obj) {
		var out = "";
		for (var s in obj) {
			out += s + "\n";
		}
		alert(out);
	}

}