if cmd[1].lower() == 'username':
      if self.accessOf(userC) >= 50:
        blkM = re.search('(.*)',string.join(cmd[2:],' '))
        if blkM:
          usr = blkM.group(1)
          self.sync_msg(CHANNEL,'ACK! Will \002block\002 [[User talk:%s]] for username".' % (usr))
          try:
            admin.blockUser(site,usr,'indefinite','Please read our our [[WP:USERNAME|username policy]] and choose another name {{usernameblocked}}',EnableAutoblock=0)
          except admin.BlockError:
            admin.blockUser(site,usr,'indefinite','Please read our our [[WP:USERNAME|username policy]] and choose another name {{usernameblocked}}',EnableAutoblock=0)
          pg_ = wikipedia.Page(site,'User:%s' % (usr))
          wikipedia.setAction('Blocked user')
          talk = pg_.switchTalkPage()
          content = talk.get() + "\n"
          content += '{{Username}} ~~~~' 
          talk.put(content,minorEdit=False)  
        else:
          self.sync_msg(channel,'%s: the syntax is: Username Username' % user0)