Manage Calculated Parameters tool offers many solutions. By defining rules (formulas) like Sum all Lengths, Count Window, Fire Rating from Wall to Windows and other you can run the Manage Calculated Parameters tool to apply these rules to selected/defined instances. In the video below we show an example where we add a Timestamp rule to the selected instances, and then re-use this same rule with simple Execute Calculated Parameters feature.
You can download a free trial of Kobi Toolkit for Revit here.
