{
      super(composite);
      setValidator
        (new ICellEditorValidator()
         {
           public String isValid(Object object)
           {
             if (object instanceof Float)
             {
               return null;
             }
             else
             {
               String string = (String)object;
               try
               {
                 Float.parseFloat(string);
                 return null;
               }
               catch (NumberFormatException exception)
               {
                 return exception.getMessage();
               }
             }
           }
         });
    }