You're welcome.
Right about the time I saved my post, I realized you were using Moodle 3.0. My wife was asking me to do something, so I didn't get a chance to edit and fix the link, so just let me point out that anytime you have a documentation page like that, you can change the numbers to go to the correct page for your version of Moodle. In this case, if you replace the 31 with 30, you will get the correct page for your Moodle. Many times it won't matter, like in this case, but sometimes there are drastic changes from one version of Moodle to another, and looking at the correct page for your Moodle can be important.