Missing parameter error
===

I'm new in play framework and I'm trying to do a simple post to server.
In my routes I set:

    POST 	/Hello/add 			controllers.Hello.add(name)
In my Hello.java class I set:

    public class Hello extends Controller {
    	public static Result add(String name){
    		//add code
    	}
    }
And in my html file:

	<form action="Hello/add" method="post">
		<input type="text" name="name" />
		<input type="submit" value="Add" />
	</form>
But when I click on the button 'Add', is lauched the following exception:

    For request 'POST /Hello/add' [Missing parameter: name]
Someone knows why?