Create a Formula Field Type

mutation {
  fields(
    boardId: "615be38975138d0001c501a7"
    dto: {
      name: "Quantity Left"
      description: "This is a formula field type"
      type: "formula"
      unique: false
      dontUpdate: false
      typeData: { formula: "{Total Quantity}-{Actual Quantity}" }
    }
  ) {
    id
    fieldsSecret {
      name
      description
      type
      typeData {
        formula
      }
    }
    boardId
    createdTime
    lastModifiedTime
  }
}
{
    "data": {
        "fields": {
            "id": "6175ffbe40dc970001b8f84f",
            "fieldsSecret": {
                "name": "Quantity Left",
                "description": "This is a formula field type",
                "type": "formula",
                "typeData": {
                    "formula": "{Total Quantity}-{Actual Quantity}"
                }
            },
            "boardId": "615be38975138d0001c501a7",
            "createdTime": "Mon Oct 25 00:52:14 GMT 2021",
            "lastModifiedTime": null
        }
    }
}

Update a Formula Field Type

mutation {
  updateFields(
    boardId: "615be38975138d0001c501a7"
    fieldId: "6175ffbe40dc970001b8f84f"
    dto: {
      name: "Quantity Left"
      description: "This is an updated formula field type"
      type: "formula"
      unique: true
      dontUpdate: false
      typeData: { formula: "{Total Quantity}-{Actual Quantity}" }
    }
  ) {
    id
    fieldsSecret {
      name
      description
      type
      typeData {
        formula
      }
    }
    boardId
    createdTime
    lastModifiedTime
  }
}
{
    "data": {
        "updateFields": {
            "id": "6175ffbe40dc970001b8f84f",
            "fieldsSecret": {
                "name": "Quantity Left",
                "description": "This is an updated formula field type",
                "type": "formula",
                "typeData": {
                    "formula": "{Total Quantity}-{Actual Quantity}"
                }
            },
            "boardId": "615be38975138d0001c501a7",
            "createdTime": "Mon Oct 25 00:52:14 GMT 2021",
            "lastModifiedTime": "Mon Oct 25 00:58:15 GMT 2021"
        }
    }
}

Delete a Formula Field

mutation {
  deleteFields(
    boardId: "615be38975138d0001c501a7"
    fieldId: "6175ffbe40dc970001b8f84f"
  )
}
{
    "data": {
        "deleteFields": "SUCCESS"
    }
}