You can create
four types of variables in Illustrator: Graph Data, Linked File,
Text String, and Visibility. A variable’s type indicates which object
attributes are changeable (dynamic).
Note: The
Variable panel menu also provides commands for creating variables.
Click the New Variable button in
the Variables panel. To subsequently bind an object to the variable,
select the object and the variable, and click the Make Visibility
Dynamic button or the Make Object Dynamic button.