Set custom field for Request based on requester's domain

{
  "pipeline": [
    {
      "type": "source:targetprocess:EntityChanged",
      "entityTypes": [
        "request"
      ],
      "modifications": {
        "created": true,
        "deleted": false,
        "updated": false
      }
    },
    {
      "type": "filter:Relational",
      "or": [
        {
          "and": [
            {
              "target": {
                "type": "field",
                "name": "VotesCount",
                "target": {
                  "type": "field",
                  "name": "Previous",
                  "target": {
                    "type": "pipelineBlockOutput"
                  }
                }
              },
              "value": {
                "type": "constant",
                "value": null
              },
              "operator": {
                "type": "is"
              }
            }
          ]
        }
      ]
    },
    {
      "type": "action:JavaScript",
      "script": "const api = context.getService(\"targetprocess/api/v2\");\nconst requestId = args.ResourceId;\n//Customers mappings by their domains. Syntax: \"customerdomain.com\": \"Custom Field Value\".\n//customerdomain.com should be in Lowercase ONLY! If this is not the last element, it should end with comma.\nconst customers = {\n  \"gmail.com\": \"Gmail\",\n  \"yahoo.com\": \"Yahoo\",\n  \"microsoft.com\": \"Microsoft\"\n}\n\nconst requesters = await api.queryAsync(args.ResourceType, {\n  select: \"requesters.select(email)\",\n  where: \"id=\" + requestId\n});\nconst requester = requesters[0][0].replace(/^.+?@/i, '').toLowerCase();\n\nif (!customers[requester]) {\n  console.log(\"There's no such value for this Customer.\")\n  return;\n}\n\nconsole.log(`The request was assigned to ${customers[requester]}`);\n\nreturn {\n  command: \"targetprocess:UpdateResource\",\n  payload: {\n    resourceType: args.ResourceType,\n    resourceId: requestId,\n    fields: {\n      Customer: customers[requester]\n    }\n  }\n};\n"
    }
  ]
}