The external update function enables you to extend the core update of Smart Instrumentation. You can do this by writing your own logic code using C# or VB .NET and attaching it to Smart Instrumentation Rule Manager using your Assembly Project signature.
The external update function lets you control and modify the attribute values of new, modified, and related items that are triggered by the pertinent custom update rule that is defined in the Rule Manager.
Syntax
CalcReturnInfo spiExtendedService.CustomCalculation(ParmInfo param)