How do I download the latest INTEGRATION verison of an artifactory dependency

I have an artifactory (generic) build in jenkins. It works very well for publishing but I'm having problems with what to write in the spec file for the "download" section.

I want my build to download the latest version of a file from another build. My repo layout is configured so that if I use a url like: http://artiserver:8081/artifactory/infra/package-scripts/[INTEGRATION]/scripts_archive.tar.gz I always get the most recent version of that file.

In the "download file" spec section of the generic artifactory integration job config I can write a spec file like so:

{
   "files": [
     {
         "pattern": "infra/package-scripts/32/scripts_archive.tar.gz"
     }
   ]
}

And this works as expected (always getting the 32 version of the artifact. I want to make the job depends on the latest version (ie, what i get from the INTEGRATION link) eg:

{
   "files": [
     {
         "pattern": "infra/package-scripts/[INTEGRATION]/scripts_archive.tar.gz"
     }
   ]
}

Is this possible? Or do I need my job to depend on a promoted build without the numbering?

--edit--

I've also tried:

{
  "files": [
     {
        "aql": { 
            "items.find" : {
                "repo": "infra",
                "name": "scripts_archive.tar.gz",
             },
            "sort": { "$desc": [ "created" ] },
            "limit": 1
         }
      }
   ]
}

But get syntax errors..

-- edit 2 --

Turns out I can't yet use sort/limit in jenkins spec file AQL - https://www.jfrog.com/jira/browse/HAP-832