trying to change an object with pubsub pattern or through a function

I have this code below. I'm new to object oriented programming and I'm just learning about pub/sub. in the code I thought I was changing the oVars object dynamically. what am i doing wrong?

        $(document).ready( function(){
        //if checked perform some operation if uncheckec perform a differnt operation
        $emitter = $({});
        var oVars = {};

        $('.checkboxes :checkbox').click(function(){
            var checkboxChecked = $(this);
            $emitter.trigger("thisBox", checkboxChecked)
        });

        function whichBox(ovars){
            $emitter.on("thisBox", function(e, val){
                console.log($(val));
                if($(val).is(":checked") && val.id == "withones"){
                    alert('withones clicked')
                    ovars[val.id] = true;
                }
                if(! $(val).is(":checked") && val.id == "withones"){
                    alert('withones unchecked')
                    ovars[val.id] = false;
                }

                if($(val).is(":checked") && val.id == "withoutOnes"){
                    alert('withones clicked')
                    ovars[val.id] = true;
                }
                if(! $(val).is(":checked") && val.id == "withoutOnes"){
                    alert('withones unchecked')
                    ovars[val.id] = false;
                }

            })
        }

i want to update the ovars obj every time the checkbox is toggeled so i want oVar to look something like this

        ovars{
            withones : true, //or false if unclicked
            withoutOnes : false, // or true  if checked
            etc..
        }

i want to be able to do later in my code

        if(ovars['withones'] == true){
            do this;
        }
        if(ovars['withones'] == false){
            do this;
        }

I dont know why the code below doesnt work. I put it the obj (oVars) in the paramater so I thought that oVars will be updated because of what i did in whichBox function ovars[val.id] = true;

       whichBox(oVars)
        console.log("ovars" + oVars)

or why this doesnt work for testing

       whichBox(function(oVars){
            console.log("ovars" + oVars)
         });

jsfiddle for testing