Variables push the automation process of Jira Issue creation with Smart Issue Templates even further.
Variables are the placeholders that are automatically filled with pre-configured data you need issues to contain.
...
To use this feature you need to either set create variables when creating a Hierarchy or in the “Manage Hierarchies” section Manage Hierarchies page of the Smart Issue Templates.
In this guide, we will cover both of the options and will start from the very beginning - creating a Hierarchy. This guide is on using variables, so in case you are struggling with creating Hierarchies, please refer to this user guide.
...
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 the variable is not given any other value. Also, it is not necessary to fill this field right now.
...