Hi,
I am not quite understanding what you are trying to achieve. You are trying to count all service activities and update which entity?
When should this calculation run?
What should happen if a service activity is deleted or cancelled?
Are you using crm v4 or 2011?
Points 1 and 2, do you mean you created 2 attributes? if so, on which entity?
Rob
Microsoft Certified Technology Specialist (CRM) GAP Consulting Ltd.