GreenDesk uses Value elements to carry a wide range of underlying text (string) values, numerical (float or integer) values, and question/answer (boolean) values. Quantity value elements can additionally carry a unit.

Value elements are value wrappers, also known as "deep values"; they carry an underlying simple value. Because they are model elements, they can also carry metadata - such as when they were last modified and by whom - as well as relationships to other model elements.

The underlying value may be derived from other values or may be fixed as read-only (constant), in which cases the underlying value is not editable.

In the GreenDesk Expert System, the underlying value carried by value wrapper elements can also be 'null', which means "undefined" or "not known yet" and is then displayed as UNDEF. If you see a value element with an UNDEF symbol you usually need to "feed" the expert system with a value. Especially Activity pages, Credit pages, and Worksheet pages often prompt users for such values as needed.

Like most GreenDesk model element types, this element type has a dedicated web page that can also carry rich user notes and comments, and in some cases also file attachments. This element type can also be related to other model elements.

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