How to select (focus) last row of paginated CFGrid?

Question

I have a CFGrid with pagination, and have a separate form to add new row to last row of the grid.

//Ajax form submit
    ColdFusion.Ajax.submitForm('form1', 'data.cfc?method=insertRow', formUpdateHandler, formErrorHandler);

    //Handler function post update
    function formUpdateHandler() {
      ColdFusion.Grid.refresh('grid', true);
      ColdFusion.Grid.getGridObject('grid').getSelectionModel().selectLastRow();
    }

The selectLastRow() method doesn't seem to do anything, and it does not throw a script error either? Do I actually have to something else to get focus?

Thanks in advance!