Problem set content in controller

1

I have a problem when set a value to the variable content of my controller.

Before using: this.set(‘content’,datos);

Currently make some modifications in the code and I make this call within: store.findQuery(‘elemento’,{bq:query}).then(function(elemento){…} where the variable “this” does not represent the same context.

What is the right way to do it?

App.ElementosController = Ember.ArrayController.extend({
    buscarDato: function() {
        // Código ...
        store.findAll('tipo').then(function(tipo){
            // Código ...
    	    store.findQuery('elemento',{bq:query}).then(function(elemento){
    	       // Código ...
    	       //AQUI DESEO HACER LA ASIGNACIÓN				
    	    });
        });
    }
})

PD: Sorry for my English =)