My service

(function(){
  angular.module('desktopApp').service('marketingService',function($http,$q){

  var portopc = location.port.length>0 ? location.port : "";
  var urlcoremetrics = window.location.protocol+"//"+window.location.hostname+ ":" + portopc + '/'+ "scripts/controllers/Marketing.json";
  var salida="";

	  this.MostrarNombre = function()
	  {

		 	var club = this;
		 	club.team = [];
	    	 $http.get(urlcoremetrics).success(function(data) {
	    		 club.team =  (data.coremetricslabel);
	    		 alert (club.team);

	    	 });

	    	 return  club.team;
	  };

  });

})();


My Controller the calling

 marketingService.MostrarNombre();