Multiple field value in URL (scripted field)

Hi,
What I want to do is exactly what this user wanted to do as well: How to pass multiple field values of a table to URL
So basically the possibility to pass multiple values in a field URL. I tried using the Scripted field but it did not really work. Here is what I did:
'https://teamcity/buildConfiguration/' + doc['log.build.configuration.id'].value + '/' + doc['log.build.id'].value + '?buildTab=log'

But when I go back to the Discover tab I don't see my other fields, just the Scripted Field I created, and I don't see any logs...

What am I doing wrong, isn't this suppose to create another field with the given URL?

The message you are seeing in discover is stating that there are "no results matching your search". Try extending the time range to a larger range that contains data.