A specialized KPI that gets its values from a saved "worksheet".
The worksheet information is obtained using the
Return the caption as defined in the XML for this KPI.
Return the logical name for this KPI.
Get a specific value from this KPI.
Overridden to bypass the generic machinery in the abstract base class implementation.
Add additional properties beyond those defined in the KPI block. This takes the form:
pList(n) = name
pList(n,"defaultValue") = value
pList(n,"columnNo") = #
pPropNo is the number of next open slot in the list.
Notify subclass that KPI is has just be executed. This is a good place to override properties, such as range and threshold.