hi, you're on the right track but you need to consider that your syntax might be a little off (I can't tell what your actual column consists of) and you are trying to reference a collection of users (i.e. more than one). For the latter you would be best served by reading up on collections here:
https://experienceleague.adobe.com/docs/workfront/using/reporting/reports/text-mode/reference-collec...
Consider the following sample text mode:
displayname=Team members
listdelimiter=<p>
listmethod=nested(team.teamMembers).lists
textmode=true
type=iterate
valueexpression=CONCAT({user}.{name})
valueformat=HTML
This is a sample only, but you will clearly see your team "team members" call being used in the correct syntax. I think the specific code above would call the primary team assigned, and list all the team members regardless of whether they are active or deactivated. But it's a start just to show you what can be done.