I have a script which takes a file prefix and assumes that prefix.$NUMBER is in the working directory. In addition I have to create a file in the workdir. In essence I want to combine the two listings below:

listing: |
      ${
        var listing = inputs.mydir.listing;
        listing.push(inputs.myfile);
        return listing;
       }

and

listing:
      - entryname: config.json
        entry: |
          {
           "global" : true ,
            "debug" : "2t"
          }

I tried:

listing:
      - entryname: config.json
            entry: |
              {
               "global" : true ,
                "debug" : "2"
              }
      - ${var f =inputs.nr_dir.location.concat('/').concat(inputs.nr_prefix).concat('.1'); return f; }
      - ${var f =inputs.nr_dir.location.concat('/').concat(inputs.nr_prefix).concat('.2'); return f; }

and

- $(inputs.nr_dir.path)/$(inputs.nr_prefix).1

Thank you for your help.