F5 BIG-IP APM customization: Password change validation
Use the F5 APM Advanced Customization Editor and reference to this script from Common/footer.inc.
For example:
<script src="https://www.van-sluis.nl/f5/scripts/password_change_validation.js"></script>
Tested on version BIG-IP 15.0.0 Build 0.0.39 Final