addbutton.setTitle( constants.AddMetadataToTheRule() );
addbutton.addClickListener( new ClickListener() {
public void onClick(Widget w) {
MetadataCol met = new MetadataCol();
met.attr = box.getText();
dt.getMetadataCols().add( met );
scrapeData( dt.getMetadataCols().size() + 1 );
refreshGrid();
refreshAttributeWidget();