# Definition Naming Error

A widget hierarchy which is to be designated as a reusable object must satisfy a number of criteria.

One of these constraints is the fact that the root of the widget hierarchy must be named. In other words, you must explicitly set the variable name for the root widget at the top of the hierarchy you wish to make a definition.

Simply type a name into the Variable Name field above the graphical widget hierarchy Construction Area.

See also:

- Definitions
- Widget and Variable Names
- About WorkShop Visual