Plugins/MailboxAlias configuration not working when not successive

[Marc Roos]

This is not working because the numbering is not successive. This whole 
configuration implementation is of course nothing to be proud of. 

plugin {
  #setting_name = value

  # archive folder
  mailbox_alias_old = Archive
  mailbox_alias_new = Archief
  mailbox_alias_old2 = Archive
  mailbox_alias_new2 = Archief mappen
  mailbox_alias_old3 = Archive
  mailbox_alias_new3 = Archived messages
  mailbox_alias_old4 = Archive
  mailbox_alias_new4 = Archived mail
  mailbox_alias_old5 = Archive
  mailbox_alias_new5 = Archives

  # spam folder
  mailbox_alias_old10 = Spam
  mailbox_alias_new10 = Junk
  mailbox_alias_old11 = Spam
  mailbox_alias_new11 = Junk E-mail
  mailbox_alias_old12 = Spam
  mailbox_alias_new12 = Ongewenste e-mail

  # drafst folder
  mailbox_alias_old20 = Drafts
  mailbox_alias_new20 = Concepten

}

https://wiki2.dovecot.org/Plugins/MailboxAlias