Hapi Joi field validation

validation.js

//Route

        {
            method: 'GET',
            path: '/{version}/services/{path*}',
	    config:{
		handler: {
                    proxy: { 
			mapUri: controller.payments.mapper , 
			passThrough: true, 
			redirects: 2,  
			// postResponse: postResponse 
                    } 
		},
 		validate:{
		    path: {
                        version: lib.Joi.string().regex(/v[\d]+/)
                   }
		}
	    }
        },