Specific “change from baseline” metrics are not included in the GET-Metrics web service. Instead, you are able to calculate the “change from baseline” for any metric by performing a series of calls to the GET-Metrics web service: One to get the metric values for the property’s baseline period and another for the desired period ending date. This approach provides greater flexibility and allows users to calculate the “Change from Baseline” for any metric. These steps can also be used to calculate the change for a metric between any two period ending dates. The metrics available through the GET-Metrics web service will be expanded as development continues.