Getting Dimension value and description from default dimension in ax 2012

private Description getdimension(DimensionDefault _defualtDimension)
{
    DefaultDimensionView    defaultDimensionView;    
    
    select defaultDimensionView
        where defaultDimensionView.DefaultDimension == _defualtDimension
        && defaultDimensionView.Name == 'CostCenter';    
    
    return defaultDimensionView.dimensionDiscription();   
}