GetUser - need only user name

[LukeGilner1]

I'm trying to get the currently logged in username in an Arcade expression in ArcPro 2.8.  I've used the GetUser(Portal('https://www.arcgis.com')) to populate the user id, username, name, email etc. in a big long string, but I only want the username.  How can I do that?  Seems like it should be fairly straight forward.

[MarkBockenhauer]

For anyone searching how to do this, and finding this thread, you can also do the following:

return getuser(portal('https://www.arcgis.com')).username

[scardina]

In case anyone else gets here while troubleshooting - this was the solution for me for about a year, but somehow upgrading to ArcGIS Pro 3.6.0 has broken it.  I'm getting an unexpected null.  I'm signed in to the portal just fine - nothing changed but the upgrade.