Problems encountered in the custom webhook node about n8n HOT 3 OPEN

import type {INodeType, INodeTypeDescription, IWebhookFunctions, IWebhookResponseData} from "n8n-workflow";

export class AppWebhookTrigger implements INodeType {
	description: INodeTypeDescription = {
		defaults: {
			name: 'app webhook'
		},
		displayName: 'app webhook Trigger',
		description: 'app webhook',
		name: 'weixinMpTrigger',
		inputs: [],
		outputs: ['main'],
		group: ['trigger'],
		version: 1,
		properties: [
			{
				displayName: 'Event',
				name: 'event',
				type: 'options',
				noDataExpression: true,
				options: [{
					displayName: "path1",
					name: 'Path1',
					value: "text"
				}, {
					displayName: "path2",
					name: "Path2",
					value: "image"
				}, {
					displayName: "path3",
					name: "Path3",
					value: "voice"
				}],
				default: 'text'
			}
		],
		webhooks: [
			{
				name: 'default',
				httpMethod: 'POST',
				responseMode: 'onReceived',
				path: '={{$parameter["event"]',
			}
		]
	}

	async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
		const requestBody = this.getRequestObject().body || {}
		return {
			workflowData: [
				[
					{
						json: requestBody
					}
				]
			],
			webhookResponse: "success"
		}
	}
}