You have activated the Variables tab

Lists all available variables. You can create new variables, or edit or clean up existing ones.

Name

Displays the name of the variable.

Type

Displays the type of the variable. The String, Boolean, Decimal, Date, Duration, User, Document, and Collection types are available.

Initial value

Displays the value of the variable.

Scope

Displays the scope of the variable. This can be the system, the process, or a process instance.

Variable catalog

Enables you to select a variable catalog. Click Browse Browse to select a variable catalog.