I have a drag feature. If i set the drag events when i construct the drag feature object it's working very well:

```
var dragFeature = new OpenLayers.Control.DragFeature(pointsLayer,
        {
            onStart:function (feature, pixel){
                //Do stuf
            }
            ,
            onComplete: function(feature, pixel){
                //Do stuff
            }
        });

```

The problem is that i want to change those events after i create the object, or i want to do a little bit more onComplete (so i want a default action and be able to add a new action).

I tried with 

```
dragFeature.events.on(
        {   
            onComplete: function(feature){
            alert(feature);
            }
        }
);

```

But this is not working. Any idea?