error message is too long, how to format it?

I am developing an oracle application (form) form version is 11.0.30
I have an error message popped up in  the toolbar and the message is just too long and I cannot read all, it's cut off. So, how can I make the message two line in the toolbar. I have the following code to catch error message (errbuf). How to automatically create second line in the toobar bar

IF retcode = 0 THEN
               message('a request created successfully');
      ELSE
               message(errbuf);
      END IF;

      EXCEPTION
            WHEN others THEN
         message(errbuf);