Rules for custom attributes

The name cannot contain spaces or special characters. It can contain numbers, underscores, and dashes.

The value can contain special characters and spaces, and you can also leave it blank. Special characters might require double quotes if the value will be executed, for example “echo hello > temp.txt”.

Not defining a custom attribute within the appliance database, is like leaving the value blank when the custom attribute is determined within a running job.

A custom attribute value can be multiple lines.

Because it is used as a delimiter, the @ sign cannot be used in the default value you specify in a custom attributes.

You cannot use a custom attribute within a custom attribute value.