Timer raises numeric or value error: character string buffer too small

[MJelmorini]

When more tan 100 timers are a value error is raised
code:
l_pad varchar2(100);

l_pad := replace(lpad('a',logger.g_running_timers,'>')||' ', 'a', null);

[jeffreykemp]

I've modified my version like this:

      l_pad varchar2(255);
...
      l_pad := substr(ltrim(lpad(' ', logger.g_running_timers, '>')), 1, 255);