2 different routes almost same template/js files

help
1

I need to have 2 different routes e.g.:

/experiment
/experiment/url1

that render same template (the html file is constructed as a dynamic template ) and also have same logic (.js file).
The routes.js looks like below:

FlowRouter.route('/experiment', {
	
	action: function() {
		 BlazeLayout.render('experiment', {
			main: "experiment"
			
		});
		 return document.title = "Experiment";

	 },
 });

The only difference between the 2 different routes is that in the last page of the dynamic template for the route :
/experiment/url1

I need to add a text and a random id which also should be saved calling a method.
What is the best way to achieve this?