Process Conditional Logic - Expressions or Decisions?

Summary

Where to position conditional logic

Content

Hi All,

I want to implement some relatively simple conditional logic to control the flow and data within an OIC Process.

For example, I want to implement the following logic as part of a data mapping - if variable_a="low" then variable_b=15, else variable_b=25

So I have tried to implement this type of logic using a data mapper component and using an expression, but I don't see an obvious way to do this within the expression builder as I don't see support for IF THEN ELSE constructs.  The expression builder implies that it is possible, as it supports conditions such as variable_a=variable_b or variable_a > variable_b.