Add Headers to TXT file received by FTP with Spreadsheet node

Hi guys, I am receiving a file on an SFTP server, getting it to n8n and sending read data to speadsheet node. However the txt file comes without headers and I really need to add some headers to this file so that the first line is not taken as headers.

Below is my workflow, and an example of the first 2 lines of the txt file (separated by ;):

0100104370;1089626;CO-CAPME48;;;;;;;;;;;;;;;;;;;;99;;;;;COP;E;1;A;CO6000067;2018-10-05;9999-12-31;10;5990;;;B;1;X;X;01;1;0100104370;0100104370;0100104370;;0100104370;90056622;0100104370;;;;;;;;;;;;;
0100112376;1094818;CO-CAPME48;;;;;;;;;;;;;;;;;;;;99;;;;;COP;E;1;A;CO6000067;2019-10-04;9999-12-31;10;5990;;;B;1;X;X;01;1;0100112376;0100112376;0100112376;;0100112376;90003178;0100112376;;;;;;;;;;;;;
0100115044;1096100;CO-CAPME48;;;;;;;;;;;;;;;;;;;;99;;;;;COP;E;1;A;CO6000067;2020-01-28;9999-12-31;10;5990;;;B;1;X;X;01;1;0100115044;0100115044;0100115044;;0100115044;90003252;0100115044;;;;;;;;;;;;;
{

  "nodes": [

    {

      "parameters": {

        "protocol": "sftp",

        "operation": "list",

        "path": "/inbound/clientes/pending"

      },

      "name": "SFTP List",

      "type": "n8n-nodes-base.ftp",

      "typeVersion": 1,

      "position": [

        450,

        300

      ],

      "credentials": {

        "sftp": "MDLZ COL SFTP"

      }

    },

    {

      "parameters": {

        "protocol": "sftp",

        "path": "={{$json[\"path\"]}}"

      },

      "name": "SFTP - Download",

      "type": "n8n-nodes-base.ftp",

      "typeVersion": 1,

      "position": [

        630,

        300

      ],

      "credentials": {

        "sftp": "MDLZ COL SFTP"

      }

    },

    {

      "parameters": {

        "options": {

          "rawData": true,

          "readAsString": true

        }

      },

      "name": "Spreadsheet File1",

      "type": "n8n-nodes-base.spreadsheetFile",

      "typeVersion": 1,

      "position": [

        820,

        130

      ]

    }

  ],

  "connections": {

    "SFTP List": {

      "main": [

        [

          {

            "node": "SFTP - Download",

            "type": "main",

            "index": 0

          }

        ]

      ]

    },

    "SFTP - Download": {

      "main": [

        [

          {

            "node": "Spreadsheet File1",

            "type": "main",

            "index": 0

          }

        ]

      ]

    }

  }

}

I did this in the workflow mentioned here @pradilla