[
  {
    "op": "core/text-transform",
    "engineConfig": {
      "facets": [
        {
          "type": "list",
          "name": "ueber",
          "expression": "isBlank(value)",
          "columnName": "ueber",
          "invert": false,
          "omitBlank": false,
          "omitError": false,
          "selection": [
            {
              "v": {
                "v": false,
                "l": "false"
              }
            }
          ],
          "selectBlank": false,
          "selectError": false
        }
      ],
      "mode": "row-based"
    },
    "columnName": "0500",
    "expression": "grel:if(isNonBlank(cells['M|HST'].value), value[0] + 'F' + value[2] ,value[0] + 'f' + value[2])",
    "onError": "keep-original",
    "repeat": false,
    "repeatCount": 10
  }
]