private void addVariable(ExpressionParser ep, Object object) {
if (object==null) return;
if (!(object instanceof DataSource)) return;
String alias = DataInfo.getAlias(object);
if (alias!=null) ep.addVariable(new VariableAssociation((DataSource)object, alias));
else ep.addVariable(new VariableAssociation((DataSource)object, DataInfo.getLabel(object)));
}
});
/* delExp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {