Set the names to use when manipulating the columns. 
   names = makelist();
   rc = insertc( names, 'OBJNAME', -1 );
   rc = insertc( names, 'OBJTYPE', -1 );
   rc = insertc( names, 'OBJDESC', -1 );
   rc = insertc( names, 'MODIFIED', -1 );

   call send( model, '_setColumnNames',
              names );