minecraft-bedrock-json-schemas/source/resource/ui/elements/properties/variables.json

{
  "title": "Variables",
  "description": "The variables that are contained within this element.",
  "anyOf": [
    {
      "$ref": "../../general/item_ref.json"
    },
    {
      "type": "array",
      "items": {
        "type": "object",
        "title": "Variables",
        "additionalProperties": {
          "$ref": "#/definitions/variables"
        }
      }
    },
    {
      "type": "object",
      "title": "Variables",
      "additionalProperties": {
        "$ref": "#/definitions/variables"
      }
    }
  ]
}