Dynamic Form Creation Flex

NEW XML-------------
<?xml version="1.0"?>
<userinfoform>
        <user>
                <firstname inputtype="TextInput" formlabel="First Name">Robert</firstname>
                <lastname inputtype="TextInput" formlabel="Last Name">Jackson</lastname>
                <venueitems inputtype="ComboBox" formlabel="Venue" dataprovider="venueDataSet" methodname="comboBoxHandler"></venueitems>
                <submitbutton inputtype="Button" buttonlabel="Send Form" methodname="handleFormSubmit"></submitbutton>
        </user>
</userinfoform>


MXML----------------

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="handleCreationComplete()">
        <mx:Script>
        <![CDATA[
	    	import mx.controls.ComboBox;
	    	import mx.collections.ArrayCollection;
	    	import mx.controls.Button;
	        import mx.containers.FormItem;
	        import mx.controls.Label;
	        import mx.controls.TextInput;
	        
	        import mx.controls.Alert;
	        import mx.rpc.events.FaultEvent;
	        import mx.rpc.events.ResultEvent;
	        
	        public var venueDataSet:ArrayCollection = new ArrayCollection();
	        public var labelList:Array = new Array("New York", "Orlando", "Cincinnati");
	        public var dataList:Array = new Array("NY", "OL", "CN");
	        
	        private function initDataSet():void
	        {
				for (var i:int = 0; i < dataList.length; i++){
					var newItem:Object = new Object();
					newItem.data = dataList[i];
					newItem.label = labelList[i];
					  
					venueDataSet.addItem(newItem);
				}
			}
	
	        
	        private function handleCreationComplete():void
	        {
	                initDataSet();
	                XMLService.send();              
	        }
	        
	        private function errorHandler(evt:FaultEvent):void
	        {
	                Alert.show( "Error: " + evt.fault.message );
	        }
	        
	        private function resultHandler(evt:ResultEvent):void
	        {
	                buildForm(new XML(evt.result));
	        }
	        
	        private function comboBoxHandler( e:Event ):void
	        {
	        	var cBox:ComboBox = e.currentTarget as ComboBox;
	            trace( "You selected: " +  cBox.selectedItem.label );
	            trace( "Data: " +  cBox.selectedItem.data );
	        }
	                
	        private function handleFormSubmit( e:MouseEvent ):void
	        {
				trace( "You clicked the submit button!!!" );	
	        }
	        
	        private function buildForm(xml:XML):void
	        {
	            var lst:XMLList = xml.children();
	            var frmItem:FormItem;
	            var txtInput:TextInput;
	            var btItem:Button;
	            var cBox:ComboBox;
	            var itemMethod:Function;
	                    
	            for(var i:int = 0; i < lst.length(); i++){
	                var x:XMLList = lst[i].children();
	                
	                for(var a:int = 0; a < x.length(); a++){
	                    if(x[a].@inputtype == 'TextInput'){
	                        frmItem = new FormItem();
	                        frmItem.direction = "horizontal";
	                        frmItem.label = x[a].@formlabel;
	                        
	                        txtInput = new TextInput();
	                        txtInput.text = x[a];
	                        frmItem.addChild(txtInput);
	                        
	                    }else if(x[a].@inputtype == 'Button'){
							frmItem  = new FormItem();
	                        frmItem.direction = "horizontal";
	                        frmItem.label = x[a].@formlabel;
	                        
	                       	btItem = new Button();
	                        btItem.label = x[a].@buttonlabel;
	                        itemMethod = this[ x[a].@methodname ] as Function;
	                        btItem.addEventListener(MouseEvent.CLICK, itemMethod);
	                        frmItem.addChild(btItem);
	                                               
	                    }else if(x[a].@inputtype == 'ComboBox'){
	                    	frmItem  = new FormItem();
	                        frmItem.direction = "horizontal";
	                        frmItem.label = x[a].@formlabel;
	                        
	                        cBox = new ComboBox();
	                        itemMethod = this[ x[a].@methodname ] as Function;
	                        cBox.dataProvider = this[ x[a].@dataprovider ] as ArrayCollection;
	                        cBox.addEventListener(Event.CHANGE, itemMethod);
	                        frmItem.addChild(cBox);
	                    	
	                    }else{
	                    	// Support other form field types
	                    	                    	
	                    }
	                    
	                    userInfoForm.addChild(frmItem);
	                    
	                }
	            }
	        }
	                
	    ]]>
        </mx:Script>
        <mx:HTTPService fault="errorHandler(event)" id="XMLService" resultFormat="e4x" url="assets/form_1.xml" result="resultHandler(event)" />
        <mx:Form id="userInfoForm" />
</mx:Application>

                                              

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