Multiple image Upload

How to upload multiple image in Meta Box.I am using file type but that is not working.

array(
					'name' => 'Image',
					'desc' => 'Upload an image',
					'id' =>'service_img',
					'type' => 'file',
					'max_file_uploads' => '5',
					'allow' => array('attachment'),
				),

https://ww.wp.xz.cn/plugins/meta-box/