This node will set the persistent menu next to the editable area in Facebook Messenger, there two kind of options:

• URL: it opens a specific url. In the mobile version it’s possible to specify the size of the browser window. Also supports Messenger Extensions
• Postback: sends the text defined in value field to the chat (as a text message)

It also allows the disable the text area (user will interact only with menu with the chatbot) or to delete a previous menu. On desktop, remember to reload the chat window in order to see the menu changes.

The menu items can be passed through the payload by the upstream node:

msg.payload = [  
	{    
		type: 'url',    
		label: 'JavaScript Jedi',    
		url: '<http://javascript-jedi.com>',    
		webview_height_ratio: 'full' // tall|full|compact  
	},  
	{    
		type: 'postback',    
		label: 'Help',    
		value: '/help'  
	}
];
return msg;

otherwise all parameters can be passed by the upstream node

msg.payload = {
	composerInputDisabled: true,  
	command: 'set',  
	items: [    
		{ 
			type: 'url',      
			label: 'JavaScript Jedi',      
			url: '<http://javascript-jedi.com>',      
			webview_height_ratio: 'full' // tall|full|compact    
		},    
		{      
			type: 'postback',      
			label: 'Help',      
			value: '/help'    
		}  
	]
};
return msg;

A maximum 3 menu items are allowed. If more items are needed, it’s possible to create nested menus via Function node:

msg.payload = {  
	composerInputDisabled: true,  
	command: 'set',  
	items: [    
		{      
			type: 'url',      
			label: 'JavaScript Jedi',      
			url: '<http://javascript-jedi.com>',      
			webview_height_ratio: 'full' // tall|full|compact    
		},   
		{      
			label: 'Sub Menu',      
			items: [        
				{          
					type: 'postback',          
					label: 'Postback 1',          
					value: 'postback1'        
				},        
				{          
					type: 'postback',          
					label: 'Postback 2',          
					value: 'postback2'        
				}      
			]    
		}  
	]
};
return msg;

Available parameters for the msg.payload

The [item] object