[
  {
    "op": "core/text-transform",
    "engineConfig": {
      "facets": [
        {
          "type": "list",
          "name": "0500",
          "expression": "value",
          "columnName": "0500",
          "invert": true,
          "omitBlank": false,
          "omitError": false,
          "selection": [
            {
              "v": {
                "v": "Afn",
                "l": "Afn"
              }
            }
          ],
          "selectBlank": true,
          "selectError": false
        },
        {
          "type": "list",
          "name": "4000",
          "expression": "isBlank(value)",
          "columnName": "4000",
          "invert": false,
          "omitBlank": false,
          "omitError": false,
          "selection": [
            {
              "v": {
                "v": true,
                "l": "true"
              }
            }
          ],
          "selectBlank": false,
          "selectError": false
        }
      ],
      "mode": "row-based"
    },
    "columnName": "4000",
    "expression": "grel:'Titel fehlt'",
    "onError": "keep-original",
    "repeat": false,
    "repeatCount": 10,
    "description": "Text transform on cells in column 4000 using expression grel:'Titel fehlt'"
  }
]