How would we allow the shared parameters created by the API to be able to have the Parameter property: "Values can vary by group instance". Now they are by default set to "Values are aligned per group type".
InteralDefinition seems to have method SetAllowVaryBetweenGroups. http://revitapisearch.com/html/6f5af0cc-2ab3-153a-e07d-78fbc12aefc1.htm.
Any suggestion would be welcome.