Changing Password WEM 8.1

Migrateduser

Hi all, 

Our customer want to change the password of WEM in production enviroment but i've not change this password never, so i've investigated about these actions to change it and i've see an script called "/opt/OpenText/WEM/Content/8_1/bin/vgnpasswordchange.sh", and some of documentation about it in the same path with the name "vgnpasswordchange-README.txt", but have some dudes about it:

1º.- This script is secure? Could make some issue if i launch it ?

2º.- Over documentation  vgnpasswordchange-README.txt, it are commenting that after launch the script is necessary change the password in LDAP, ¿How i can change the LDAP?

As you can see, i don't know all the correct procedure to do this action of change passwor, so if somebody could tell me step by step how i can change it correctly, please,I would be grateful

Thanks in advance and regards