else if ( name_str == "crit_pct" )
  {
    struct crit_pct_expr_t : public expr_t
    {
      action_t* action;
      crit_pct_expr_t( action_t* a ) : expr_t( "crit_pct" ), action( a ) {}
      virtual double evaluate()
      {
        return action -> composite_crit() * 100.0;
      }
    };
    return new crit_pct_expr_t( this );
  }