how to route to an action with ajax.request

Hi, so I am attempting to gather a number of onclicks from the user with a javascript function and store them in an array. The problem is that I now want to be able to take that array and covnert it into ruby so that I can perform further functions on it and save it in the database. This is the function that I have so far: I am using JSON and trying to pass the array in an ajax.request call but it is not routing to the /appointments/array/ action. Is this the right way to go about it?

        function test()         {               for(i=1;i<22;i++){                     if (document.getElementById(i+'d').className == "selected"){                         myArray.push(i);                     }                 }

                new Ajax.Request('/appointments/array/', {method:'post',postBody:'data='+myArray.toJSON});         }