Reset iOS badge to zero by installationId - parse.com and javascript

Client side function

Parse.Cloud.run("resetBadge", {
            installationId: installationId
        });

Cloud code function

// (Deploy this to Parse Cloud Code)

Parse.Cloud.define("resetBadge", function(request, response){
     
  var Inst = Parse.Object.extend("_Installation");
  var InstQ = new Parse.Query(Inst);
  InstQ.equalTo("installationId", request.params.installationId);
  InstQ.find({
     success: function(objs){
        var row = objs[0];
        row.set("badge",0);
        row.save();
        response.success();
     },
    error: function(object, error){
    response.error("error.");
    }   
  });
});