code: public boolean setNumericName(String name, int i)
      {
          if(i < getNumNumericalVars() && i >= 0)
              numericalVariableNames.put(i, name);
          else
              return false;
          
          return true;
      }
docs: Sets the unique name associated with the <tt>i</tt>'th numeric attribute. All strings will be converted to lower case first.
  
  @param name the name to use
  @param i the <tt>i</tt>th attribute.
  @return <tt>true</tt> if the value was set, <tt>false</tt> if it was not set because an invalid index was given .