How to use the mixpanel.track function in mixpanel

var project_data = null;
								try
								{
									project_data = JSON.parse (value.target.result);
								}
								catch (e)
								{
									debug ('Project format error '+e);
								}
								if (project_data && _.isArray (project_data))
								{
									for (var projectIndex in project_data)
									{
										library.add (project_data[projectIndex]);
									}
									mixpanel.track ('Projects Import', {
										// language: projectimport.language
									});
									$wyapp.emit ('library');
								}
							};
							fileReader.onerror = function (err)

$mdDialog.show(message).then(function() {
		    	var pos = _.indexOf($scope.project.dashboard, signal);
		    	mixpanel.track ('Dashboard Erase',
				{
					language: $scope.project.language,
					type: $scope.project.dashboard[pos].style
				});
				if (pos >= 0) $scope.project.dashboard.splice (pos, 1);
				$timeout (function ()
				{
					$(window).trigger ('resize');
				}, 500);
		    }, function() {
		    	// 

$mdDialog.show(message).then(function() {
		    	$scope.project.schematics = '';
		    	mixpanel.track ('Schematics Erase', {
	 				language: $scope.project.language
	 			});
				library.storeSchematics ($scope.project.id, $scope.project.schematics);	
		    }, function() {

this.rename = function (project)
		{
			mixpanel.track ('Project Rename', {
				language: project.language
			});
			$mdDialog.hide ();
			var renameProjDialog = $mdDialog.show({
		      controller: function ($scope)
		      {


				$scope.title = project.title;


		      	this.rename = function ()
		      	{
					debug ('Rename project '+project.title+' language '+project.language);
					if ($scope.title.trim().length > 3)
					{

$scope.showPopupRename = 0;
		$scope.showPopupNewFolder = 0;
		$scope.showPopupError = 0;
		$scope.showPopupUpload = 0;
		$scope.showPopupDownload = 0;

		$scope.contentPopupRename = "";
		$scope.contentPopupNewFolder = "";
		$scope.contentPopupError = "";

		$scope.MAXPACKET = 32*1024;
		$scope.uploadvars={};
		$scope.downloadvars={};


		mixpanel.track ('File Explorer', {
			category: $wydevice.device.category
		});
		var that = this;



		var message = function (t, p)
		{
			//change dir
			if (t === 'fe1')
			{
				$timeout (function ()
				{
					$scope.selectedRight = {}; //force deselectation

					if (p[0] == "ERROR")

this.install = function (p, l)
		{
			p.loading = true;
			$scope.runmanager = true;
			$scope.runoutput = '';
			$wydevice.send ('pm', {a:'i', p:p.n, l:l});
			$scope.runpackage = p.n;
			$scope.runlanguage = l;
			mixpanel.track ('Package Install',
			{
				category: $wydevice.device.category,
				package: p.n,
				langauge: l
			});
		};

else
				{
				 	for(var index1=$scope.project.tree[0].children[index].children.length-1;index1>=0;index1--)
					{
						$scope.project.tree[0].children[index].children.splice(index1,1);
					}
					i=0;
					_.each(firmware,function(firmwareData, firmwareFilename){

						that.newFile(firmwareFilename);
						$scope.project.tree[0].children[index].children[i].content=firmwareData;
						i++;	
					});
				}
			});
			mixpanel.track ('Project Load Firmware',
			{
				langauge: $scope.project.language
			});
		});

fileReader.onload = function (value)
			 		{
			 			$scope.project.schematics = value.target.result;
			 			mixpanel.track ('Schematics Load', {
			 				language: $scope.project.language
			 			});
			 			library.storeSchematics ($scope.project.id, $scope.project.schematics);
			 		};
			 		fileReader.readAsText (file);

app.controller('TaskManagerController', function($scope, $timeout, $mdDialog, $wydevice){
		debug ('Registering');

		$scope.tasks = [];

		mixpanel.track ('Task Manager', {
			category: $wydevice.device.category
		});
		
		var that = this;

		var message = function (t, p)
		{
			if (t === 'tm')
			{
				$timeout (function ()
				{
					$scope.tasks = p;
				});
			}
		};

$wydevice.on ('message', function (t, p)
		{
			if (t==='i')
			{
				if ($scope.device.category !== p.c || $scope.device.network !== p.i)
				{
					mixpanel.track ('Device Data',
					{
						category: p.c
					});
				}
				$timeout (function ()
				{
					if (p.tr) $scope.running = p.tr;
					else $scope.running = false;
					if (settings.LABEL[p.c])
					{
						$scope.device.category = p.c;	
						$scope.device.network = p.i;	
					}
					else
					{
						$scope.device.category = 'board';