Seeing empty values at Jira, when passing user(multi-select) attributes through iFTTT rules

[Motamarri_ Muni Venkata Surendra Harasai-CW]

We are using confirms to for intake requests to submit to Jira issue.  in one of the form, we are using filed  AppUsers user(multi-select), and propagating user name, I believe full name.  and email attributes in description. we are using this syntax for JIra DC version and works fine. after migrating to cloud version I am seeing ifttt not processing values 

"summary": "Add [entry.AppUsers.iterateAndPrint([entry.username],)] to Google PlayStore",
"description":"*App Name:* [entry.AppName2.label]\n *Requested Users :*[entry.AppUsers.iterateAndPrint([entry.email],)]"
}}

Can you please advise on this