How is a POST API created and called?

8345.HelloWorldAPIv2.zip

I have attached a functioning GET and POST API, but I don't know how to view the json arguments sent to the API.

Example:the 'value': 'something to test' string. How do I get to that value in the API?.

        app.api.call('POST'app.api.buildURL('Hello/World/1'), {'value':'something to test'},
        {
            success: function(data){
                if(this.disposed){
                    return;
                }
                console.log(data);
                self.message = data;
                _.extend(selfself.message);
                self.render();
            },
            error: function (e) {
                console.log('error');
                console.log(e);
           }
        });