lib/totaljsPatch.js
function setter(obj, prop, value){
        var propDashed = prop.replace(/_/g,'-');
        var propUnderscored = prop.replace(/\-/g,'_');

        obj[prop] = value;
        obj[propDashed] = value;
        obj[propUnderscored] = value;
        return true;
    }
function setter(obj, prop, value){
        var propDashed = prop.replace(/_/g,'-');
        var propUnderscored = prop.replace(/\-/g,'_');

        obj[prop] = value;
        obj[propDashed] = value;
        obj[propUnderscored] = value;
        return true;
    }
already patched