How to add portal user name on custom print layouts

[AileYG]

I have created a custom printing tool to use on the web apps. I have added tittle and date on dynamic texts, but I can't seem to get the user name on it. 

What I want to be able to add in the layout prints is the Portal user login name, or at least the initials. What syntax should I use on the dynamic text for it?

Thanks,
Elia

[DavinWalker2 · Accepted solution]

Unfortunately this is likely going to require a custom Print Widget.

This post covers it a little bit https://community.esri.com/t5/arcgis-enterprise-questions/custom-print-service-author-name-web-appbu...