Using Spring, I need to pass in dynamic data to html to build a web page

Been struggling on this a while, hope you guys can help.

I'm building a webpage using spring that needs to build a table using an api call that returns a dynamic number of elements.

Here is what I have now:

@RequestMapping(value="/managecustomerconfigurations", method=RequestMethod.GET)
    public ModelAndView setUpPage(){
        ModelAndView model = new ModelAndView("customerconfigurations");
        model.addObject("cdata", custServe.listAllCustomers());
        return model;
    }

I can get cdata in my web page if I type

<p th:text="'Customer:' + ${cdata}" />

but I cannot see it if I just type

${cdata}  

or if I put the data in any javascript (even if I use an onload method)

Quick sidenote: I am using html 5 not jsp.

Ideally I would want to pass in the api response into javascript and build a table based on that response.

Anyone have any suggestions?

edit: grammar