code: void showPasswordMatchError(boolean show) {
  
          if (show) {
              m_form.setErrorPassword2(
                  new UserError(Messages.get().getBundle(m_locale).key(Messages.GUI_PWCHANGE_PASSWORD_MISMATCH_0)),
                  OpenCmsTheme.SECURITY_INVALID);
          } else {
              m_form.setErrorPassword2(null, OpenCmsTheme.SECURITY_STRONG);
          }
      }
docs: Shows or hides the not matching passwords error.<p>
  
  @param show <code>true</code> to show the error