Update User Credential using Groovy script

Hi,

I'm looking to update an User credential from Security Material of SAP CPI using a Groovy Script on a flow that should run every two months (since the user credential expire every three).
I'm using the following link to get the current password of the user and create a new one, but I don't know how to make the update on SAP CPI system.

https://blogs.sap.com/2021/01/27/sap-cpi-fetch-all-security-artifacts-dont-read-this/

Any help?

Thank you in advance.