Remote Object - Create Record

gistfile1.js

var activity = new RemoteObjectModel.Wellness_Activity__c();
activity.set('Wellness_Goal__c', goal.Id);
activity.set('User__c', userId);
activity.create(function(error, result, event) {
    if (error != null) {
        alert(error);
    } else {
        alert('Activity logged successfully!');
    }
});