webview loading problem

exports.getCourseViewpack = function(){
 
   //Creates a new window
  var win11 = Ti.UI.createWindow({
    //Ti.UI.orientation = Ti.UI.LANDSCAPE_LEFT,
    height:height,
    width:width,
    backgroundColor: '#A3A375',
    statusBarHidden:true,
    tabBarHidden:true,
    navBarHidden:true,
    fullscreen:true
    });
 
  win11.orientationModes = [Ti.UI.LANDSCAPE_LEFT];
 
   var courseview1  = Titanium.UI.createWebView({
   url:'',
   borderRadius:10,
   backgroundColor:'#8F5500',
   scalesPageToFit:true,
   contentWidth:'auto',
   contentHeight:'auto',
   opacity:1
   });
 
  win11.add(courseview1);
 
    var mm1=Ti.Filesystem.applicationDataDirectory+ 'lms_api.html';
    var file1 = Titanium.Filesystem.getFile(mm1); 
    courseview1.url= file1.nativePath; //url from data directory
 
    alert("Hi......");
 
   return win11;
};