Problems with Forms in ActionScript 3.0

function showClaimForm(event:Event):void
{
  var today = new Date();
  
  var labelFormat:TextFormat = new TextFormat();
  labelFormat.font = "Verdana";
  labelFormat.size = 10;
  labelFormat.color = 0x0069B3;
  labelFormat.align = "right";
  
  var dlrInfo:TextFormat = new TextFormat();
  dlrInfo.font = "Verdana";
  dlrInfo.size = 10;
  dlrInfo.color = 0x000000;
  
  var proofInfo:TextFormat = new TextFormat();
  proofInfo.font = "Verdana";
  proofInfo.size = 10;
  proofInfo.color = 0x000000;
  proofInfo.align = "right";
  
  var dealerLabel_tf:TextField = new TextField();
  dealerLabel_tf.htmlText = "<b>Dealer:</b>";
  dealerLabel_tf.antiAliasType = AntiAliasType.ADVANCED;
  dealerLabel_tf.x = 0;
  dealerLabel_tf.y = 10;
  dealerLabel_tf.width = 130;
  dealerLabel_tf.setTextFormat(labelFormat);
  form.addChild(dealerLabel_tf);
 
  var dealerInfo_tf:TextField = new TextField();
  dealerInfo_tf.htmlText = dlrAddress;
  dealerInfo_tf.x = 140;
  dealerInfo_tf.y = 10;
  dealerInfo_tf.width = 300;
  dealerInfo_tf.height = 50;
  dealerInfo_tf.setTextFormat(dlrInfo);
  form.addChild(dealerInfo_tf);
 
  var lmcInvLabel_tf:TextField = new TextField();
  lmcInvLabel_tf.htmlText = "<b>LMC Invoice #:</b>";
  lmcInvLabel_tf.antiAliasType = AntiAliasType.ADVANCED;
  lmcInvLabel_tf.x = 0;
  lmcInvLabel_tf.y = dealerLabel_tf.y + 55;
  lmcInvLabel_tf.width = 130;
  lmcInvLabel_tf.setTextFormat(labelFormat);
  form.addChild(lmcInvLabel_tf);
  var lmcInvNum_ti:TextInput = new TextInput();
  lmcInvNum_ti.width = 150;
  lmcInvNum_ti.move(140, 65);
  form.addChild(lmcInvNum_ti);
  
  var lmcInvDateLabel_tf:TextField = new TextField();
  lmcInvDateLabel_tf.htmlText = "<b>LMC Invoice Date:</b>";
  lmcInvDateLabel_tf.antiAliasType = AntiAliasType.ADVANCED;
  lmcInvDateLabel_tf.x = 0;
  lmcInvDateLabel_tf.y = lmcInvLabel_tf.y + 25;
  lmcInvDateLabel_tf.width = 130;
  lmcInvDateLabel_tf.setTextFormat(labelFormat);
  form.addChild(lmcInvDateLabel_tf);
  var lmcInvMonth_cb:ComboBox = new ComboBox();
  lmcInvMonth_cb.width = 40;
  lmcInvMonth_cb.rowCount = 10;
  
  for (m = 1; m < 13; m++) {
   lmcInvMonth_cb.addItem({label:m});
   if ((today.month + 1) == m) {
    lmcInvMonth_cb.selectedIndex = m-1;
   }
  }
  lmcInvMonth_cb.move(140, lmcInvNum_ti.y + 25);
  form.addChild(lmcInvMonth_cb);
  
  var lmcInvDay_cb:ComboBox = new ComboBox();
  lmcInvDay_cb.width = 40;
  lmcInvDay_cb.rowCount = 10;
  
  for (d = 1; d < 32; d++) {
   lmcInvDay_cb.addItem({label:d});
   if ((today.day + 1) == d) {
    lmcInvDay_cb.selectedIndex = d;
   }
  }
  lmcInvDay_cb.move(lmcInvMonth_cb.x + 43, lmcInvNum_ti.y + 25);
  form.addChild(lmcInvDay_cb);
  
  var lmcInvYear_cb:ComboBox = new ComboBox();
  lmcInvYear_cb.width = 70;
  
  var yrIndx:int = 0;
  for (yr = 2006; yr < 2008; yr++) {
   lmcInvYear_cb.addItem({label:yr});
   if (today.getFullYear() == yr) {
    lmcInvYear_cb.selectedIndex = yrIndx;
   }
   yrIndx++;
  }
  lmcInvYear_cb.move(lmcInvDay_cb.x + 43, lmcInvNum_ti.y + 25);
  form.addChild(lmcInvYear_cb);
  
  var reasonForRequestLabel_tf:TextField = new TextField();
  reasonForRequestLabel_tf.htmlText = "<b>Reason For Request:</b>";
  reasonForRequestLabel_tf.antiAliasType = AntiAliasType.ADVANCED;
  reasonForRequestLabel_tf.x = 0;
  reasonForRequestLabel_tf.y = yValue;
  reasonForRequestLabel_tf.width = 130;
  reasonForRequestLabel_tf.setTextFormat(labelFormat);
  form.addChild(reasonForRequestLabel_tf);
   
  var reasonForRequest_ta:TextArea = new TextArea();
  reasonForRequest_ta.width = 300;
  reasonForRequest_ta.height = 70;
  reasonForRequest_ta.move(140, yValue);
  form.addChild(reasonForRequest_ta);
  
  var submitRequest_btn:Button = new Button();
  submitRequest_btn.label = 'Submit Request';
  submitRequest_btn.emphasized = true;
  submitRequest_btn.move(140, yValue + 75);
  form.addChild(submitRequest_btn);
  
  
  submitRequest_btn.addEventListener(MouseEvent.CLICK,processTheClaim);
  function processTheClaim():void {
   var request:URLRequest = new URLRequest();
   request.url = "processClaim.php";
   request.method = URLRequestMethod.POST;
   request.data = form;
   var loader:URLLoader = new URLLoader();
   loader.dataFormat = URLLoaderDataFormat.VARIABLES;
   loader.addEventListener(Event.COMPLETE, completeHandler);
   try
   {
    loader.load(request);
   }
   catch (error:Error)
   {
    trace("Unable to load URL");
   }
   
   function completeHandler(event:Event):void
   {
    trace(event.target.data);
   }
  } 
    }
    else
    {
        trace("loader is not a URLLoader!");
    }
}