How to fill a text customfield with an Asset object attribut

[Mario GELES]

Hi community, 

I would have the city of the reporter in my Jira issues. 

The City is an attribute of Object in the ObjectType Users in Asset

To achieve this goal I have created a text customfiled called Site_Test and I have made an automation. Automation that doesn't work. 

My Automation : When a ticket is created if Site_Test is empty then lookupObjects with this query ObjectType = Users AND Name = "${reporter.label}" and then edit field Site_Test with :

{
"fields": {
"Site_Test": ["{{lookupObjects.City}}"]
}
}

I have set a log action before the edit field action. Log action : Site_Test : {{lookupObjects.City}} . The log indicates that Object is not found. When I change my query for ObjectType = Users AND Name = "Mario GELES"  the result is BORDEAUX but the customfield is still empty

So I have two problems.

The first is that this part of my query Name = "${reporter.label}"  don't work. When I use this exact same query in an asset customfield it work so I don't understand why not in an automation. 

The second problem is that even if the query works the text customfield is still empty. 

Could someone help me with this ? 

[Mario GELES · Accepted solution]

Well I found the solution to my first problem too.

It was not a big deal but I hope it could help someone someday. 
The solution is to keep it simple, just using the smartvalue : 

[Mario GELES · Accepted solution]

I found the solution of the second problem. 
I used the simple way (not the Additional fields option) to set the field value with just the smartvalue {{lookupObjects.City}}. It worked

Now, I just have to figure how to inject the name of the reporter in the AQL query