Variables push the automation process of Jira Issue creation with Smart Issue Templates even further. Variables are placeholders that are automatically filled with pre-configured data you need issues to contain.
...
You can go to the Manage Variables page and create them there or create variables inside the Hierarchy.
...
On the “Create Hierarchy” screen you will see a dedicated variable setting section. This section, by default, contains a single “Add” button. Click this button to create your first variable.
...
By clicking on the “Add” button you will be creating variables. At first, both of the fields that a variable has will be empty.
The first field is “Name” and it is pretty much self-explanatory.
The Name must not contain spaces or a “$” symbol, i.e. (my variable - NOT allowed; myVariable - OK; $uperVariable - NOT allowed.)
The second - is the “Default value”. It is important to understand that the default value is the value that will be used when creating an issue in case if the variable is not given any other value.
...