You must use Ctrl F9 to insert the braces and NOT just type the braces using the keyboard.
We’re going to add the month and year for our example, so type the following inside the braces.
You can easily add the current date and time to your Word documents, but what if you only want to add the month or month and year, but no date?

The MMMM and YYYY are switches that tell Word what format to use for the month and year.
Click “Update”, or press F9 (with the cursor inside the field code or the field code selected), to update the field and display the month and year.
Regardless of what version of Windows you are using, you can run the Windows update tool by following the same basic process.
One of the best ways to keep your Microsoft Office Suite up to date is to enable automatic updates.
Each document you create in Word contains information about the document or Properties, such as the date the file was created, the author of the document, and the number of pages and words in the document.
When you save the document, some of these properties are updates, such as the date on which the document was last saved, or modified.
We’ll show you how to insert the month and year using a field code and how to change the format of the month and year using switches.
In our example, we’re creating a title page for our monthly TPS Report and want to include the current month and year.
To do this, click the Document Properties button in the top, left corner of the panel and select Advanced Properties from the drop-down menu.