I have an expression rule that implements a common component that is going to be

I have an expression rule that implements a common component that is going to be called from multiple forms. While the bulk of this component is common, there are some context-specific parts to it, such as custom validation, which depends on the context.
What I would like to do is to pass some custom validation code into the common component rule. What is the best way to go about doing this?

OriginalPostID-150902

OriginalPostID-150902