AddToXMLObject.js

//create the first child element and add it to the root
var layerElement = [NSXMLElement elementWithName:@"layer"];
[root addChild:layerElement];

//add elements based on variables to the first child
var layerNameElement = [NSXMLElement elementWithName:@"name" stringValue:layerName];
[layerElement addChild:layerNameElement];

var layerXPosElement = [NSXMLElement elementWithName:@"xPos" stringValue:layerXpos];
[layerElement addChild:layerXPosElement];

var layerYPosElement = [NSXMLElement elementWithName:@"yPox" stringValue:layerYpos];
[layerElement addChild:layerYPosElement];

var layerHeightElement = [NSXMLElement elementWithName:@"height" stringValue:layerHeight];
[layerElement addChild:layerHeightElement];

var layerWidthElement = [NSXMLElement elementWithName:@"width" stringValue:layerWidth];
[layerElement addChild:layerWidthElement];