AnswerValue elements carry model values that are 'true' or 'false'. This can also stand for 'yes'/'no', 'on'/'off', or 'enabled'/'disabled'. The name of the answer element is the question answered by the value of the answer element.

They are used throughout GreenDesk to gather information required to address the credit criteria of green rating system industry standards.

A typical question (the name/title of an AnswerValue) might be:

Is the building completely naturally ventilated ?

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.

You can see that in the case of an it makes a huge difference whether the underyling value is UNDEF (the question has not been answered yet) or has been answered explicitly as 'false' (or 'no') !

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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