Not really sure, but why would you want to do that?
Anyway, AFAIK, I don't think JASS allows anything other than 1 or 4 characters between ' ' (I recall a post by cohadar somewhere saying that you could have something like 'A' and 'A000', but not 'A0' or 'A00')
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.