Open the Variable window in one of the following ways:
Complete the fields. You can use [Copy] and [Prefill] for this purpose. At a minimum, you need to enter a descriptive name (up to 20 characters) for the variable in the Variable field.
The remaining fields are optional —you can complete some or all of them if you want.
For more information, click on the title
bar of the window, and then click a field or button.