# File lib/farts/farts_parser.rb, line 775
    def execute(intp)
      begin
      if intp.vars.has_key?(@vname)
          intp.vars[@vname].send(@vattr.intern)
        else
          fart_err("unknown local variable '#{@vname}'")
        end
      rescue NameError
        fart_err($!.message)
      end
    end